Switzerland, Francs Switzerland, Francs Revision of Prior Period [Axis] Revision of Prior Period [Axis] Disclosure of contingent liabilities [line items] Disclosure of contingent liabilities [line items] Interest expense Interest expense Interest expense Disclosure of geographical areas [line items] Disclosure of geographical areas [line items] Fixed consideration transferred, acquisition-date fair value Fixed Consideration Transferred, Acquisition-Date Fair Value Fixed Consideration Transferred, Acquisition-Date Fair Value Additions Number Of Bitcoin Added Number Of Bitcoin Added license fee License fee [Member] License fee Standards issued but not yet effective New Accounting Standards Issued But Not Yet Effective, Policy [Policy Text Block] New Accounting Standards Issued But Not Yet Effective, Policy [Policy Text Block] Convertible debt Current debt instruments issued Research tax credit Research And Development Tax Credit, Capitalised Research And Development Tax Credit, 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EQUITY (DEFICIT) AND LIABILITIES Equity and liabilities [abstract] Proceeds received from long-term projects Proceeds from government grants, classified as financing activities Entity Filer Category Entity Filer Category Board members fees to non-executive members Key Management Personnel Compensation, Board Of Director Fees Key Management Personnel Compensation, Board Of Director Fees Conversion Price Adjustment Conversion Price Adjustment [Member] Conversion Price Adjustment Non-Current Portion Of Non-Current Convertible Borrowings Issued Non-Current Portion Of Non-Current Convertible Borrowings Issued Non-Current Portion Of Non-Current Convertible Borrowings Issued Trade and other receivables Trade And Other Receivables [Member] Trade And Other Receivables [Member] Withholding tax Tax Effect Of Withholding Tax Tax Effect Of Withholding Tax Operating lease expense Minimum operating lease payments recognised as expense Average rate Average foreign exchange rate September 2023 Private 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multiple Sell price multiple (applied to exercise price) Selling Price Multiple, Share Options And Other Equity Instruments Granted Selling Price Multiple, Share Options And Other Equity Instruments Granted Sequans Communications Ltd. Sequans Communications Ltd. [Member] Sequans Communications Ltd. [Member] DBO at 31.12. with PI +0.25% Pension Increase Rate Plus 0.25% [Member] Pension Increase Rate Plus 0.25% Categories of related parties [domain] Categories of related parties [domain] Convertible Notes Amended, Option Three Convertible Notes Amended, Option Three [Member] Convertible Notes Amended, Option Three [Member] Measurement period duration Measurement Period Duration Measurement Period Duration Disclosure of other provisions [table] Disclosure of other provisions [table] Cash flow hedges Derivative Assets [Member] Derivative Assets [Member] Contributions by plan participants Employee contributions Gain on sale of 4G intangible and tangible assets, net Gain On Sale Of 4G Intangible And Tangible Assets Gain On Sale Of 4G Intangible And Tangible Assets Cash Flows From Business Acquisition Cash Flows From Business Acquisition Cash Flows From Business Acquisition Royalty Agreement Terms Royalty Agreement Terms 1 [Member] Royalty Agreement Terms [Member] Classes of financial instruments [domain] Classes of financial instruments [domain] Disclosure of detailed information about business combination [table] Disclosure of detailed information about business combination [table] Exchange difference Increase (decrease) through net exchange differences, property, plant and equipment including right-of-use assets Summary of Customers Representing Company's Total Revenue Disclosure of major customers [text block] Decrease in weighted average share price (as a percent) Weighted Average Share Price of Share Options And Other Equity Instruments In Share-Based Payment Arrangement, Change As Percentage Weighted Average Share Price of Share Options And Other Equity Instruments In Share-Based Payment Arrangement, Change As Percentage Auditor Location Auditor Location Reduction of issued capital Reduction of issued capital Number of bitcoin held as collateral for convertible debt Number Of Bitcoin Held As Collateral For Convertible Debt Number Of Bitcoin Held As Collateral For Convertible Debt Foreign exchange loss Net foreign exchange loss Repurchase price of secured convertible debentures Repurchase Price Of Secured Convertible Debentures Repurchase Price Of Secured Convertible Debentures Revenue from development contracts where no related incremental costs were identified Revenue from rendering of information technology services Products and services [domain] Products and services [domain] Basic (in shares) Weighted average number of shares outstanding for basic EPS (in shares) Weighted average number of ordinary shares used in calculating basic earnings per share Post-employment benefit expense in profit or loss Post-employment benefit expense in profit or loss Percentage of bonus in event of dismissal Termination Indemnity Amount of Bonus, Percentage Termination Indemnity Amount of Bonus, Percentage 2015 convertible notes Convertible Borrowings Issued - April 2015 [Member] Convertible Borrowings Issued - April 2015 [Member] Total non-current Non-Current Financial Liabilities, At Fair Value Non-Current Financial Liabilities, At Fair Value Significant Components of Deferred Tax Assets and Liabilities Disclosure of temporary difference, unused tax losses and unused tax credits [text block] Accrued interest Borrowings, Accrued Interest Borrowings, Accrued Interest Disclosure of detailed information about intangible assets [table] Disclosure of detailed information about intangible assets [table] Other capital reserves Other reserves Share-based payment expense for the year Share-based payment expense Key management personnel compensation, share-based payment Gain (loss) on debt modification Gain (Loss) On Debt Modification Gain (Loss) On Debt Modification Fair value of convertible note Borrowings Life used to compute amortization in the case of perpetual licenses Useful Lives Or Amortisation Rates, Intangible Assets Other Than Goodwill, Period Useful Lives Or Amortisation Rates, Intangible Assets Other Than Goodwill, Period Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer From subsidiaries Subsidiaries [Member] Sequans Communications Israel (2009) Ltd. 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Pte. Sequans Communications Ltd. Pte. [Member] Sequans Communications Ltd. Pte. 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Additions Other Than Through Business Combinations, Digital Assets Additions Other Than Through Business Combinations, Digital Assets Disclosure of non-adjusting events after reporting period [abstract] Impairment of digital assets Adjustments For Impairment Loss (Reversal Of Impairment Loss) Recognised In Profit Or Loss, Digital Assets Adjustments For Impairment Loss (Reversal Of Impairment Loss) Recognised In Profit Or Loss, Digital Assets Disclosure Of Financial Assets And Liabilities [Table] Disclosure Of Financial Assets And Liabilities [Table] Disclosure Of Financial Assets And Liabilities [Table] Repayment of government loans Repayment Of Government Loans Repayment Of Government Loans Reduction in debt carrying value Debt Instrument, Increase (Decrease) For Period, Net 1 Debt Instrument, Increase (Decrease) For Period, Net Weighted average number of treasury shares Weighted Average Number Of Treasury Shares Weighted Average Number Of Treasury Shares Shareholders of the parent Profit (loss), attributable to owners of parent Loan Principal Repaid Loan Principal Repaid Loan Principal Repaid Sales and marketing Sales and marketing expense ACP contingent purchase price payable ACP Contingent Purchase Price Payable ACP Contingent Purchase Price Payable Increase (Decrease) in provisions Adjustments for provisions Continuing involvement in derecognised financial assets by type of transfer [domain] Continuing involvement in derecognised financial assets by type of transfer [domain] Period after termination date Research And Development Arrangement, Contract To Perform For Others, Period After Date Of Termination Research And Development Arrangement, Contract To Perform For Others, Period After Date Of Termination 5G Broadband Platform Licence 5G Broadband Platform Licence [Member] 5G Broadband Platform Licence 30-60 days Later than one month and not later than two months [member] Major customers [axis] Major customers [axis] Net remaining contract liability License and Services Agreement, Contract Liability License and Services Agreement, Contract Liability Deferred tax liability At January 1st At December 31st Deferred tax liability (asset) Deferred tax liability (asset) Issue of shares in connection with the vesting of restricted shares awards Increase (Decrease) Through Exercise Of Options And Warrants, Equity Increase (Decrease) Through Exercise Of Options And Warrants, Equity Total current liabilities Current liabilities Trade payables Non Current Trade Payable Other Than ACP Contigent Non Current Trade Payable Other Than ACP Contigent Cash flow hedge Cash flow hedges [member] Number of officers Number Of Officers Number Of Officers Accrued interest Non-current interest payable Benefits (paid) / deposited Benefits (Paid) Deposited, Defined Benefit Plans Benefits (Paid) Deposited, Defined Benefit Plans Other provisions and accruals Other Provisions And Accruals [Member] Other Provisions And Accruals [Member] Financial expenses: Expenses by nature [abstract] Inventories Total net inventories Current inventories Current inventories Non-controlling interests Comprehensive income, attributable to non-controlling interests Document Accounting Standard Document Accounting Standard Effective interest rate, excluding transaction costs Effective Interest Rate, Excluding Transaction Costs Effective Interest Rate, Excluding Transaction Costs Monthly over the remaining 36 months Vesting scenario 2 Share-Based Compensation Award, Tranche Two1 [Member] Share-Based Compensation Award, Tranche Two1 [Member] Increase in Tax Expense At Applicable Tax Rate Increase in Tax Expense At Applicable Tax Rate Increase in Tax Expense At Applicable Tax Rate IT and office equipment Information Technology And Office Equipment [Member] Information Technology And Office Equipment [Member] Disclosure of temporary difference, unused tax losses and unused tax credits [line items] Disclosure of temporary difference, unused tax losses and unused tax credits [line items] Percentage of total revenues Percentage of entity's revenue Percentage of entity's revenue After Two Years After Two Years [Member] After Two Years Deferred revenue Deferred Revenue [Member] Deferred Revenue Gain (loss) on debt extinguishment Loss on debt extinguishment Gain (loss) arising from difference between carrying amount of financial liability extinguished and consideration paid WAEP of units expired during the year (in usd per unit) Weighted Average Exercise Price Of Share Options And Other Equity Instruments Expired In Share-Based Payment Arrangement Weighted Average Exercise Price Of Share Options And Other Equity Instruments Expired In Share-Based Payment Arrangement Number of warrants issued to shareholders (in shares) Number Of Warrants Issued To Shareholders Number Of Warrants Issued To Shareholders Disclosure of Leases [Table] Disclosure of Leases [Table] Disclosure of Leases [Table] Share-based payment transactions Description of accounting policy for share-based payment transactions [text block] Purchase of treasury shares Purchase Of Own Shares Purchase Of Own Shares Statement of changes in equity [abstract] Statement of changes in equity [abstract] Accumulated deficit Retained earnings Retained earnings Issue of equity in private placement Issue of Equity In Private Placement Issue of Equity In Private Placement Disclosure of detailed information about business combination Disclosure of detailed information about business combination [text block] Debt Instruments (eg. Bonds) Debt instruments, amount contributed to fair value of plan assets Agreement [Domain] Agreement [Domain] Agreement [Domain] Cash equivalents held for digital assets Cash Equivalents Held For Digital Assets Cash Equivalents Held For Digital Assets Provisions for employee benefits Provisions for employee benefits April 2023 Private Placement April 2023 Private Placement [Member] April 2023 Private Placement Disclosure of detailed information about financial instruments [line items] Disclosure of detailed information about financial instruments [line items] New York Stock Exchange Compliance New York Stock Exchange Compliance [Member] New York Stock Exchange Compliance Granted during the year Number of other equity instruments granted in share-based payment arrangement Conversion of convertible debt, in ADS (in shares) Number Of ADS Issued Through Conversion Of Convertible Instruments, Equity Number Of ADS Issued Through Conversion Of Convertible Instruments, Equity Research Tax Credit [Axis] Research Tax Credit [Axis] Research Tax Credit Types of risks [domain] Types of risks [domain] Long-term investments Long-Term Investments [Member] Long-Term Investments [Member] Revision of Prior Period, Adjustment Revision of Prior Period, Adjustment [Member] Decrease (Increase) in trade receivables and other receivables Adjustments for decrease (increase) in trade and other receivables Actuarial (gain) / loss on defined benefit obligation Actuarial (Gain) Loss On Defined Benefit Obligation Actuarial (Gain) Loss On Defined Benefit Obligation Legal Entity [Axis] Legal Entity [Axis] Contact Personnel Fax Number Contact Personnel Fax Number Borrowings, accrued interest and conversion bonus Borrowings, Accrued Interest And Conversion Bonus Borrowings, Accrued Interest And Conversion Bonus Subsidiaries [axis] Subsidiaries [axis] America America [Member] America Research Tax Credit 2023 Research Tax Credit 2023 [Member] Research Tax Credit 2023 Geographical [Domain] Geographical [Domain] Common [Table] Common [Table] Disclosure of financial liabilities [table] Disclosure of financial liabilities [table] Assets sold Assets Sold Assets Sold Proceeds from convertible debt, net of transaction costs paid Proceeds From Convertible Borrowings Issued, Net Proceeds From Convertible Borrowings Issued, Net Disposals Number Of Bitcoin Sold Number Of Bitcoin Sold Disclosure of financial assets that are either past due or impaired [table] Disclosure of financial assets that are either past due or impaired [table] Geographical areas [axis] Geographical areas [axis] Actuarial assumption of interest rate on savings capital, for 2017-2023 Actuarial Assumption Of Interest Rate On Savings Capital, For 2017-2023 Actuarial Assumption Of Interest Rate On Savings Capital, For 2017-2023 Liabilities arising from financing activities beginning balance Liabilities arising from financing activities ending balance Liabilities arising from financing activities Financial assets: Financial Instruments, Assets [Abstract] Financial Instruments, Assets [Abstract] Long-Term Research Project - October 2014 Long-Term Research Project - October 2014 [Member] Long-Term Research Project - October 2014 [Member] Debt instrument, ownership limit Debt Instrument, Ownership Limit Debt Instrument, Ownership Limit Lease liabilities Non-current lease liabilities Convertible debt Carrying Amount Of Convertible Debt Carrying Amount Of Convertible Debt Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Intangible assets Intangible assets other than goodwill Document Financial Statement Error Correction [Flag] Document Financial Statement Error Correction [Flag] Actuarial assumption of interest rate on savings capital, for 2024-2026 Actuarial Assumption Of Interest Rate On Savings Capital, For 2024-2026 Actuarial Assumption Of Interest Rate On Savings Capital, For 2024-2026 Disposals, intangible assets other than goodwill Disposals, intangible assets other than goodwill Disclosure of reconciliation of defined benefit obligation Disclosure Of Reconciliation Of Defined Benefit Obligation [Table Text Block] Disclosure Of Reconciliation Of Defined Benefit Obligation Cash and cash equivalents Cash and cash equivalents at January 1 Cash and cash equivalents at period end Cash and cash equivalents Classes of ordinary shares [axis] Classes of ordinary shares [axis] Document Information [Table] Document Information [Table] Schedule of Research and Development Arrangement, Contract to Perform for Others Schedule Of Research And Development Arrangement Contract To Perform For Others1 [Table] Schedule Of Research And Development Arrangement Contract To Perform For Others1 Number of collaborative projects Government Grant Advances, Number Of Collaborative Projects, Entered During Period Government Grant Advances, Number Of Collaborative Projects, Entered During Period Reasonably possible change in risk variable, percent Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Change In Risk Variable, Percent Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Change In Risk Variable, Percent Number of installments Borrowings, Number Of Installments Borrowings, Number Of Installments Compensation of Key Management Personnel Disclosure of transactions between related parties [text block] Schedule of Interest-Bearing Loans and Borrowings Disclosure of detailed information about borrowings [text block] Total equity and liabilities Equity and liabilities China UNITED STATES Property, plant and equipment [abstract] Property, plant and equipment [abstract] ACP contingent purchase price payable ACP Contingent Purchase Price Payable [Member] ACP Contingent Purchase Price Payable Business combinations [axis] Business combinations [axis] Total, beginning of period Total, end of period Provisions Significant influence threshold percentage Significant Influence Threshold Percentage Significant Influence Threshold Percentage Business combinations [domain] Business combinations [domain] Other benefits Other short-term employee benefits Proceeds from sales of Bitcoins Proceeds From Sales Of Bitcoins Proceeds From Sales Of Bitcoins Product and Service [Domain] Product and Service [Domain] Administration cost (excl. cost for managing plan assets) Administration costs not reflected in return on plan assets, defined benefit plans Performance obligation Transaction price allocated to remaining performance obligations Change in fair value of derivative financial instruments Gains on change in fair value of derivatives Schedule of Liquidity Risk Disclosure of maturity analysis for non-derivative financial liabilities [text block] Long-term expected inflation rate (social security increase rate) Actuarial assumption of expected rates of inflation Proceeds from exercise of pre-funded and 2025 warrants Proceeds From Exercise Of Pre-Funded And Common Warrants Proceeds From Exercise Of Pre-Funded And Common Warrants Employees and social debts Short-term employee benefits accruals Increase (decrease) through effect of changes in foreign exchange rates Increase (decrease) through effect of changes in foreign exchange rates, liabilities arising from financing activities Research And Development Arrangement, Contract To Perform For Others, Type [Domain] Research And Development Arrangement, Contract To Perform For Others, Type 1 [Domain] [Domain] for Research and Development Arrangement, Contract to Perform for Others, Type Gain on debt extinguishment (Note 17.1) Convertible Debt Amendment, Net Income Convertible Debt Amendment, Net Income Interest rate risk [member] Interest rate risk [member] City Area Code City Area Code Decrease In The Market Price, Bitcoin Decrease In The Market Price, Bitcoin Decrease In The Market Price, Bitcoin Loss (gain) on debt extinguishment, net of non-cash transaction cots Adjustments For Convertible Debt Amendments Adjustments For Convertible Debt Amendments U.S. dollar denominated accounts United States of America, Dollars Disclosure of Fair Value of Financial Instruments Disclosure of fair value of financial instruments [text block] IP of Monarch2 IP of Monarch2 [Member] IP of Monarch2 Disclosure of financial assets that are either past due or impaired [line items] Disclosure of financial assets that are either past due or impaired [line items] Net cash acquired Cash and cash equivalents in subsidiary or businesses acquired or disposed Working capital Working Capital Working Capital Termination indemnity amount (in months) Termination Indemnity Amount of Gross Annual Base Remuneration, Duration Termination Indemnity Amount of Gross Annual Base Remuneration, Duration Categories of financial liabilities [domain] Categories of financial liabilities [domain] More than five years Later than five years [member] Period of the maintenance Revenue From Software Maintenance And Support Services, Period Of Maintenance Revenue From Software Maintenance And Support Services, Period Of Maintenance Government loans Non-Current Government Loans Non-Current Government Loans Related party disclosures Disclosure of related party [text block] Long-Term Research Project - January 2016 Long-Term Research Project - January 2016 [Member] Long-Term Research Project - January 2016 [Member] Relationship To Entity [Domain] Relationship To Entity [Domain] [Domain] for Title Of Individual [Axis] Classes of financial assets [domain] Classes of financial assets [domain] Impairment Impairment loss recognised in profit or loss, intangible assets and goodwill Intangible assets Digital assets Disclosure of intangible assets [text block] Capital option upon retirement Actuarial Assumption Of Benefit Options At Retirement Actuarial Assumption Of Benefit Options At Retirement Rest of world (no single country representing more than 10%) Europe, Middle East, And Africa [Member] Europe, Middle East, And Africa [Member] Statement of compliance Statement of IFRS compliance [text block] Risk–free interest rate (%) Risk Free Interest Rate, Share Options And Other Equity Instruments Granted Risk Free Interest Rate, Share Options And Other Equity Instruments Granted Level 3 Level 3 of fair value hierarchy [member] Disposals Disposals, property, plant and equipment including right-of-use assets Tax expense during the year recognised in OCI Income tax relating to components of other comprehensive income Disclosure of transaction price allocated to remaining performance obligations [table] Disclosure of transaction price allocated to remaining performance obligations [table] Impairment of financial assets [axis] Impairment of financial assets [axis] Interest on lease contracts (see Note 18) Interest expense on lease liabilities Repayments of non-current borrowings Repayments of non-current borrowings Interest rate used to value liability Significant unobservable input, entity's own equity instruments Disclosure of classes of share capital [table] Disclosure of classes of share capital [table] Capitalized Research And Development Costs Capitalized Research And Development Costs Capitalized Research And Development Costs Auditor Name Auditor Name Impairment of financial assets [domain] Impairment of financial assets [domain] Directors Directors, Vice Presidents And Managers [Member] Directors, Vice Presidents And Managers Unutilized amounts Decrease through write-off, financial assets Government grant advances and loans Disclosure of government grants [text block] Income Taxes [Abstract] Income Taxes [Abstract] Income Taxes [Abstract] Sensitivity analysis, increase in volatility rate, impact on in derivative fair value increase in volatility rate, percent Sensitivity Analysis, Decrease In Volatility Rate, Impact On In Derivative Fair Value Increase In Volatility Rate, Percent Sensitivity Analysis, Decrease In Volatility Rate, Impact On In Derivative Fair Value Increase In Volatility Rate, Percent Trade receivables Disclosure of trade and other receivables [text block] Conversion price premium percentage Debt Instrument, Convertible, Conversion Price, Premium Percentage Debt Instrument, Convertible, Conversion Price, Premium Percentage Provision for payment to escrow Consideration Held In Escrow Consideration Held In Escrow Cash, cash equivalents and short-term investments Cash, Cash Equivalents And Short-Term Investments [Member] Cash, Cash Equivalents And Short-Term Investments [Member] Total minimum lease payments Minimum lease payments payable under non-cancellable operating lease Trade payable term Trade Payable Term Trade Payable Term Past due status [axis] Past due status [axis] Goodwill Goodwill [member] Executive Team Executive Team [Member] Executive Team Government loan, Covid-19 support plan Government Loan, Covid-19 Support Plan [Member] Government Loan, Covid-19 Support Plan Disclosure of major customers [line items] Disclosure of major customers [line items] Net cash flow used in operating activities Cash flows from (used in) operating activities Finished goods, at the lower of cost and net realizable value Current finished goods Forfeited during the year Number of other equity instruments forfeited in share-based payment arrangement Disclosure of terms and conditions of share-based payment arrangement [line items] Disclosure of terms and conditions of share-based payment arrangement [line items] Schedule of Research and Development Expense Disclosure Of Research And Development Expense Explanatory [Table Text Block] Disclosure Of Research And Development Expense Explanatory [Table Text Block] Non-current liabilities: Non-current liabilities [abstract] Affiliate of Nokomis Capital, L.L.C. Affiliated Entity 1 [Member] Affiliated Entity [Member] Entity [Domain] Entity [Domain] Share-based payment plans Disclosure of share-based payment arrangements [text block] Products Products [Member] Products Assumed annual lapse rate of RSA (%) Assumed Annual Lapse Rate, Other Equity Instruments Granted Assumed Annual Lapse Rate, Other Equity Instruments Granted Document Fiscal Year Focus Document Fiscal Year Focus Government loan - 5.24% Loan Government Loans - 5.24 Percent Loan [Member] Government Loans - 5.24 Percent Loan [Member] Disclosure of the main assumptions used in the calculation of the swiss post-employment benefits Disclosure Of The Main Assumptions Used In The Calculation Of The Swiss Post-Employment Benefits [Table Text Block] Disclosure Of The Main Assumptions Used In The Calculation Of The Swiss Post-Employment Benefits Adjustments to reconcile profit before tax to net cash flows : Adjustments to reconcile profit (loss) [abstract] Later than one year Later than one year [member] Issuance of equity as payment of services related to private placement (in shares) Number Of Shares Issued In Exchange For Services In Private Placement Number Of Shares Issued In Exchange For Services In Private Placement Disclosure of maturity analysis for non-derivative financial liabilities [line items] Disclosure of maturity analysis for non-derivative financial liabilities [line items] Other Provisions, Contingent Liabilities and Contingent Assets [Abstract] Other Provisions, Contingent Liabilities and Contingent Assets [Abstract] Other Provisions, Contingent Liabilities and Contingent Assets [Abstract] 4G technology sale to Qualcomm and related agreements Disclosure of repurchase and reverse repurchase agreements [text block] Long-Term Research Project - March 2024 Long-Term Research Project - March 2024 [Member] Long-Term Research Project - March 2024 Contingent Consideration Liability Contingent Consideration Liability [Member] Contingent Consideration Liability Actuarial assumption of retirement age Actuarial assumption of retirement age Other current liabilities and provisions Other Current Liabilities And Provisions Recognised As Of The Acquisition Date Other Current Liabilities And Provisions Recognised As Of The Acquisition Date Short-term deposits Current Deposit Assets Current Deposit Assets Government research financing Current government grants Total current Current financial liabilities Schedule of Present Fair Values of Derivative Financial Instruments Disclosure of detailed information about financial instruments [text block] Unsecured related party loan Current unsecured bank loans received and current portion of non-current unsecured bank loans received Repurchase of the secured convertible debentures, percentage Repurchase Of The Secured Convertible Debentures, Percentage Repurchase Of The Secured Convertible Debentures, Percentage Disposals Disposals, Digital Assets Disposals, Digital Assets Types of interest rates [domain] Types of interest rates [domain] Classes of other provisions [axis] Classes of other provisions [axis] Government research financing Non-current government grants Number of unrestricted bitcoin held Number Of Unrestricted Bitcoin Held Number Of Unrestricted Bitcoin Held Manufacturing Services Agreement Manufacturing Services Agreement [Member] Manufacturing Services Agreement Leasehold improvements Leasehold improvements [member] Carrying amount Financial Instruments, Assets, Carrying Amount [Abstract] Financial Instruments, Assets, Carrying Amount [Abstract] Issue of convertible instruments Issue of convertible instruments Borrowings, secured convertible debenture allowed to repurchase, premium Borrowings, Secured Convertible Debenture Allowed To Repurchase, Premium Borrowings, Secured Convertible Debenture Allowed To Repurchase, Premium Exercise of common warrants issued in July 2025 ( in shares) Number Of Common Warrants Exercised In Share-based Payment Arrangement Number Of Common Warrants Exercised In Share-based Payment Arrangement Number of Bitcoin, held without restriction Number Of Bitcoin, Held Without Restriction Number Of Bitcoin, Held Without Restriction Impairment Impairment loss recognised in profit or loss, property, plant and equipment including right-of-use assets Trade payables Current trade payables Carrying amount Financial Instruments, Liabilities, Carrying Amount [Abstract] Financial Instruments, Liabilities, Carrying Amount [Abstract] Total compensation expense for key management personnel Key management personnel compensation Key management personnel compensation Schedule of Government Grant Advances and Loans Disclosure Of Government Grant Advances And Loans, Explanatory [Table Text Block] Disclosure Of Government Grant Advances And Loans, Explanatory Derivative financial liabilities Derivative financial liabilities Disclosure of credit risk exposure [line items] Disclosure of credit risk exposure [line items] Schedule of Main Assumptions Used Disclosure of defined benefit plans [text block] Unsecured related party loan Finance lease liability Finance Lease Liabilities [Member] Finance Lease Liabilities [Member] Disclosure of maturity analysis for non-derivative financial liabilities [table] Disclosure of maturity analysis for non-derivative financial liabilities [table] Ordinary shares Ordinary shares [member] Development and other services transferred over time Development And Other Services [Member] Development And Other Services [Member] Trade receivables Accounts receivable Current trade receivables Net effect of dilutive stock options (in shares) Dilutive effect of share options on weighted average number of ordinary shares Consultants considered equivalent to employees Consultants [Member] Consultants [Member] Prepaid expenses Current Prepayments Recognised As Of The Acquisition Date Current Prepayments Recognised As Of The Acquisition Date Earnings (loss) per share Disclosure of earnings per share [text block] Cost: Gross carrying amount Gross carrying amount [member] Applicable tax rate Applicable tax rate Inventories Disclosure of inventories [text block] Sequans Communications SAS Bitquans Holdings LLC [Member] Bitquans Holdings LLC Interest expense, net Adjustments for finance costs Local Phone Number Local Phone Number Private equity offering proceeds, including pre-funded warrants, net of transaction costs paid Proceeds from issuing shares Ordinary Shares And ADS Ordinary Shares And ADS [Member] Ordinary Shares And ADS Current Other current liabilities: Miscellaneous current liabilities [abstract] Within one year Not later than one year [member] Income tax liabilities of the parent company Current tax liabilities SC of next year with IR +0.25% 155'262 142'156 SC Of Next Year With IR +0.25% 155'262 142'156 [Member] SC Of Next Year With IR +0.25% 155'262 142'156 Research project financing Current Research Project Financing Current Research Project Financing Additions Additions on Lease Liabilities Additions on Lease Liabilities Intangible assets Identifiable intangible assets recognised as of acquisition date Quarterly over the remaining three years Vesting scenario 3 Share-Based Compensation Award, Tranche Three1 [Member] Share-Based Compensation Award, Tranche Three1 [Member] Research and Development Research and Development [Member] Research and Development Net effect of vesting of restricted stock (in shares) Effect Of Vesting Of Restricted Stock Effect Of Vesting Of Restricted Stock Other receivables Other Receivables Recognised As Of The Acquisition Date Other Receivables Recognised As Of The Acquisition Date Decrease (Increase) in inventories Adjustments for decrease (increase) in inventories Property, plant and equipment Property, plant and equipment [member] Property, plant and equipment Description of accounting policy for property, plant and equipment [text block] Monarch2 and Calliope2 IP of Monarch2 and Calliope2 [Member] IP of Monarch2 and Calliope2 Purchase consideration transferred Consideration transferred, acquisition-date fair value B. Riley Asset Management LLC and Lynrock Lake B. Riley Asset Management LLC and Lynrock Lake [Member] B. Riley Asset Management LLC and Lynrock Lake Payment of lease liabilities Payments of lease liabilities, classified as financing activities Entity Voluntary Filers Entity Voluntary Filers Charge for the year Impairment loss recognised in profit or loss Number of warrants issued to debt holders (in shares) Number Of Warrants Issued To Debt Holders Number Of Warrants Issued To Debt Holders Basis of consolidation Consolidation, Policy1 [Policy Text Block] Consolidation, Policy1 [Policy Text Block] Acquisition of ACP Advanced Circuit Pursuit AG Disclosure of business combinations [text block] Warrant, as a percentage of note value Debt Instrument, Convertible, Warrant, Percentage Of Note Value Debt Instrument, Convertible, Warrant, Percentage Of Note Value Increase (decrease) through changes in fair values, liabilities arising from financing activities Increase (decrease) through changes in fair values, liabilities arising from financing activities Second Security Purchase Agreement Second Security Purchase Agreement [Member] Second Security Purchase Agreement Losses on change in fair value of derivatives Losses on change in fair value of derivatives % equity interest Proportion of ownership interest in subsidiary Disposals on Lease Liabilities Disposals on Lease Liabilities Disposals on Lease Liabilities Entity Registrant Name Entity Registrant Name Unsecured related party loan Unsecured Related Party Loan [Member] Unsecured Related Party Loan Basic earnings (loss) per share (in dollars per share) Basic earnings (loss) per share Foreign exchange loss (gain) Adjustments for unrealised foreign exchange losses (gains) Liquidity risk Liquidity risk [member] Increase (Decrease) in contract liabilities Adjustments for increase (decrease) in deferred income including contract liabilities Cost of Revenue Cost of Revenue [Member] Cost of Revenue Diluted (in shares) Weighted average number of shares outstanding for diluted EPS (in shares) Weighted average number of ordinary shares used in calculating diluted earnings per share Service Sales [Member] Service Sales [Member] Service Sales [Member] Intangible assets with indefinite useful life [axis] Intangible assets with indefinite useful life [axis] Government grant advances Non-Current Government Grant Advances Non-Current Government Grant Advances Equity instruments Equity instruments, amount contributed to fair value of plan assets Revision of Prior Period [Domain] Revision of Prior Period [Domain] Classes of intangible assets other than goodwill [domain] Classes of intangible assets other than goodwill [domain] Share-based payment expense Adjustments for share-based payments After the two year anniversary of grant Share-Based Compensation Award, Tranche Four [Member] Share-Based Compensation Award, Tranche Four [Member] Working capital adjustments: Adjustments For Working Capital [Abstract] Adjustments For Working Capital [Abstract] 4G technology sale to Qualcomm and related agreements [Abstract] 4G technology sale to Qualcomm and related agreements [Abstract] Classes of intangible assets and goodwill [axis] Classes of intangible assets and goodwill [axis] Loss on sale of digital assets Adjustments for gain (loss) on disposals, Digital Assets Adjustments for gain (loss) on disposals, Digital Assets Currencies Other Than US Dollar Currencies Other Than US Dollar [Member] Currencies Other Than US Dollar Research project financing Non-Current Research Project Financing Non-Current Research Project Financing Impact of change in the corresponding risk variable on operating expenses Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Change In Risk Variable, Impact On Operating Expenses Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Change In Risk Variable, Impact On Operating Expenses Convertible debt Convertible Debt And Accrued Interest [Member] Convertible Debt And Accrued Interest [Member] Warrants Warrants [member] Amount funded from government grant advances Government Grant Advances, Funding Commitment Amount Government Grant Advances, Funding Commitment Amount Disclosure of analysis of other comprehensive income by item [table] Disclosure of analysis of other comprehensive income by item [table] Schedule of Intangible Assets Disclosure of reconciliation of changes in intangible assets and goodwill [text block] Class Action Lawsuit, Revenue Recognition Policy Class Action Lawsuit, Revenue Recognition Policy [Member] Class Action Lawsuit, Revenue Recognition Policy [Member] All Currencies [Domain] All Currencies [Domain] Equity (deficit): Equity [abstract] Disclosure of detailed information about financial instruments [abstract] Disclosure of detailed information about financial instruments [abstract] Debt Agreement [Domain] Debt Agreement [Domain] Debt Agreement [Domain] Number of share pre-funded warrants issued (in shares) Number Of Share Pre-Funded Warrants Issued Number Of Share Pre-Funded Warrants Issued Total non-current portion Non current Government Grants, Net Non current Government Grants, Net Capitalized development costs Capitalised development expenditure [member] Prepaid expenses Non-current prepayments Convertible debt Convertible debt Convertible Borrowings Issued [Member] Convertible Borrowings Issued [Member] Contribution by the employer Employer contributions Weighted average share price (in € per share) Weighted Average Share Price, Share Options And Other Equity Instruments Granted Weighted Average Share Price, Share Options And Other Equity Instruments Granted Impact of exchange rate Unrealised foreign exchange gains (losses) [member] Schedule of Financial Income and Expenses Disclosure Of Finance Income And Costs Explanatory [Table Text Block] Disclosure Of Finance Income And Costs Explanatory [Table Text Block] Subclassifications of assets, liabilities and equities [abstract] Subclassifications of assets, liabilities and equities [abstract] Decrease in total compensation (as a percent) Share-Based Compensation Arrangement By Share-Based Payment Award, Change In Compensation Cost, Percentage Share-Based Compensation Arrangement By Share-Based Payment Award, Change In Compensation Cost, Percentage PIK interest rate Debt Instrument, Convertible, Payment-In-Kind Interest Rate Debt Instrument, Convertible, Payment-In-Kind Interest Rate Hedging instruments [axis] Hedging instruments [axis] Number of warrants issued (in shares) Class Of Warrant Or Right, Number Of Securities Called By Warrants Or Rights1 Class Of Warrant Or Right, Number Of Securities Called By Warrants Or Rights1 Number of units expired during the year Number Of Share Options And Other Equity Instruments Expired In Share-Based Payment Arrangement Number Of Share Options And Other Equity Instruments Expired In Share-Based Payment Arrangement Non-current Miscellaneous non-current liabilities [abstract] Additions Additions other than through business combinations, intangible assets other than goodwill Financial instruments at fair value through other comprehensive income Financial assets at fair value through other comprehensive income, category [member] Rate of pension increase (PI) Actuarial assumption of expected rates of pension increases Market approach Market approach [member] ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Disclosure of fair value of plan assets [text block] Disclosure of fair value of plan assets [text block] Deposits and other receivables Other non-current receivables Schedule of Movements in the Provision for Impairment of Receivables Reconciliation of Changes in Provisions Disclosure of other provisions [text block] Borrowings, percentage of secured convertible debentures allowed to repurchase Borrowings, Percentage Of Secured Convertible Debenture Allowed To Repurchase Borrowings, Percentage Of Secured Convertible Debenture Allowed To Repurchase Useful life Useful Lives Or Depreciation Rates, Property, Plant And Equipment, Period Useful Lives Or Depreciation Rates, Property, Plant And Equipment, Period After the first year anniversary of grant Vesting scenario 1 Share-Based Compensation Award, Tranche One1 [Member] Share-Based Compensation Award, Tranche One1 [Member] Disclosure of temporary difference, unused tax losses and unused tax credits [table] Disclosure of temporary difference, unused tax losses and unused tax credits [table] Convertible debt embedded derivative Embedded Derivative [Member] Embedded Derivative [Member] vesting semi-annually over the remaining two years Vesting Semi-Anually Over The Remaining Two Years [Member] Vesting Semi-Anually Over The Remaining Two Years Social security costs and other payroll taxes Social security contributions Litigation Case [Axis] Litigation Case [Axis] Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [table] Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [table] Auditor Firm ID Auditor Firm ID Types of contracts [axis] Types of contracts [axis] Disclosure of number of Bitcoin Disclosure Of Number Of Bitcoin [Table Text Block] Disclosure Of Number Of Bitcoin Share premium Share premium [member] American Depositary Shares, each representing four ordinary shares, nominal value €0.01 per share American Depositary Shares [Member] American Depositary Shares Development services agreements Development Services Agreements [Member] Development Services Agreements [Member] Qualcomm Technologies, Inc Qualcomm Technologies, Inc [Member] Qualcomm Technologies, Inc Provision To Serve Expected Demand For Customers And Projects Provision To Serve Expected Demand For Customers And Projects [Member] Provision To Serve Expected Demand For Customers And Projects Shareholders of the parent Comprehensive income, attributable to owners of parent Total value of investments Financial assets pledged as collateral Financial assets pledged as collateral for liabilities or contingent liabilities DBO at 31.12. with DR -0.25% Discount Rate -0.25% [Member] Discount Rate -0.25% Losses on digital assets, market price Losses On Digital Assets, Market Price Losses On Digital Assets, Market Price Profit (loss) of acquiree since acquisition date Profit (loss) of acquiree since acquisition date Disclosure of reconciliation of fair value of plan assets Disclosure Of Reconciliation Of Fair Value Of Plan Assets [Table Text Block] Disclosure Of Reconciliation Of Fair Value Of Plan Assets Purchase of intangible assets and property, plant and equipment Purchase Of Property, Plant And Equipment And Intangible Assets, Classified As Investing Activities Purchase Of Property, Plant And Equipment And Intangible Assets, Classified As Investing Activities Offering price Aggregate Offering Price Aggregate Offering Price Provision of earn-out Contingent consideration recognised as of acquisition date Contingent consideration recognised as of acquisition date Disclosure of subsidiaries [table] Disclosure of subsidiaries [table] Bridge loans from related party Increase (Decrease) Through Exercise Of Bridge Loans From Related Party, Equity Increase (Decrease) Through Exercise Of Bridge Loans From Related Party, Equity Current tax liabilities, current Current tax liabilities, current Title and Position [Axis] Title and Position [Axis] Intangible assets Description of accounting policy for intangible assets other than goodwill [text block] Schedule of Average and Closing Exchange Rate for the U.S. Dollar Disclosure Of Exchange Rate For Functional Currency [Table Text Block] Disclosure Of Exchange Rate For Functional Currency [Table Text Block] Tax Jurisdiction Axis [Axis] Tax Jurisdiction Axis [Axis] Tax Jurisdiction Axis Underwriters' over-allotment shares issued (in shares) Increase (Decrease) In Number Of Underwriters' Over-Allotment Shares Issued Increase (Decrease) In Number Of Underwriters' Over-Allotment Shares Issued Retrospective application and retrospective restatement [axis] Retrospective application and retrospective restatement [axis] Financial instruments at fair value through other comprehensive income Financial instruments at fair value through other comprehensive income Financial Liabilities Measured At Fair Value Through Other Comprehensive Income [Member] Financial Liabilities Measured At Fair Value Through Other Comprehensive Income [Member] Deferred revenue Current deferred income including current contract liabilities Disclosure Of Financial Assets And Liabilities [Line Items] Disclosure Of Financial Assets And Liabilities [Line Items] [Line Items] for Disclosure Of Financial Assets And Liabilities [Table] Lease liability Lease liabilities [member] Title Of Individual [Axis] Title Of Individual 1 [Axis] Title Of Individual [Axis] Amortization and impairment of property, plant and equipment Adjustments For Depreciation Expense And Impairment Loss (Reversal Of Impairment Loss) Recognized In Profit Or Loss, Property, Plant And Equipment Adjustments For Depreciation Expense And Impairment Loss (Reversal Of Impairment Loss) Recognized In Profit Or Loss, Property, Plant And Equipment Bank guarantee Financial guarantee contracts [member] 2019-1 notes Convertible Notes 2019-1 [Member] Convertible Notes 2019-1 [Member] Convertible Notes 2018 - Nokomis Convertible Notes 2018 - Nokomis [Member] Convertible Notes 2018 - Nokomis Development Of The 5G Development Of The 5G [Member] Development Of The 5G Property, plant and equipment Property, plant and equipment including right-of-use assets at beginning of period Property, plant and equipment including right-of-use assets at end of period Property, plant and equipment including right-of-use assets Income tax liabilities Income Tax Liabilities [Member] Income Tax Liabilities Total financial liabilities Fair value Financial liabilities, at fair value Expense from equity-settled share-based payment transactions Expense from equity-settled share-based payment transactions Current income tax expense (benefit) Current tax expense (income) Hedging instruments [domain] Hedging instruments [domain] Non-adjusting events after reporting period [axis] Non-adjusting events after reporting period [axis] After one year but not more than five years Later than one year and not later than five years [member] Schedule of Effect of Implementation of IFRIC Decision on IAS 19 Disclosure of initial application of standards or interpretations [text block] Valuation techniques used in fair value measurement [domain] Valuation techniques used in fair value measurement [domain] Number of bitcoin held Number Of Bitcoin Held Number Of Bitcoin Held Ordinary share price (usd per share) Share Price1 Price of a single share of a number of saleable stocks of a company. Top of range Top of range [member] Top of range [member] Research and development Total research and development expense Research and development expense Exercise price (usd per share) Weighted average exercise price of other equity instruments granted in share-based payment arrangement 3 to 4 years Later than three years and not later than four years [member] Unrecognized benefit of tax losses carryforward Tax effect of tax losses Foreign exchange gain Net foreign exchange gain Re-measurement gains (losses) on defined benefit plans Re-measurement gains (losses) on defined benefit plans Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans Inventories [Abstract] Inventories [Abstract] Inventories [Abstract] DBO at 31.12. with SI +0.25% Salary Increase Rate Plus 0.25% [Member] Salary Increase Rate Plus 0.25% Rent, supplies, external services and other, net of capitalization of research and developments costs Miscellaneous other operating expense Net other comprehensive income (loss) not to be reclassified to profit or loss in subsequent years Other comprehensive income that will not be reclassified to profit or loss, net of tax Financial income (expense): Financial Income (Expense) [Abstract] Financial Income (Expense) [Abstract] Cash and cash equivalents Cash and cash equivalents, amount contributed to fair value of plan assets Repayment of interest-bearing research project financing Repayments of Interest-bearing Research Project Financing Repayments of Interest-bearing Research Project Financing Premium on secured convertible debentures repurchase, percentage Premium On Secured Convertible Debentures Repurchase, Percentage Premium On Secured Convertible Debentures Repurchase, Percentage China and Hong-Kong China and Hong-Kong [Member] China and Hong-Kong Inventories Description of accounting policy for measuring inventories [text block] Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Borrowings by name [domain] Borrowings by name [domain] Defined benefit obligation at Dec. 31 Defined benefit obligation, at present value Other related parties [member] Other related parties [member] Foreign currency risk Currency risk [member] Trade receivables and contract assets Trade receivables [member] Impairment of 5G broadband platform intangible and tangible assets Impairment loss (reversal of impairment loss) recognised in profit or loss Revenue from contracts with customers Revenue from contracts with customers Digital assets losses on sales, net Losses on disposals of digital assets Losses On Disposals Of Digital Assets Losses On Disposals Of Digital Assets Functional currencies and translation of financial statements denominated in currencies other than the U.S. dollar Description of accounting policy for functional currency [text block] Deferred tax liabilities Deferred tax liabilities Geographical [Axis] Geographical [Axis] Derivative maturity period Derivative Financial Liabilities, Maturity, Term Derivative Financial Liabilities, Maturity, Term [Member] WAEP of units exercisable at period end (in usd per unit) Subscription price (eur per share) Weighted Average Exercise Price Of Share Options And Other Equity Instruments Exercisable In Share-Based Payment Arrangement Weighted Average Exercise Price Of Share Options And Other Equity Instruments Exercisable In Share-Based Payment Arrangement Property, plant and equipment including right-of-use assets [axis] Property, plant and equipment including right-of-use assets [axis] Total other comprehensive income (loss) Other comprehensive income 272 Capital Fund LP 272 Capital Fund LP [Member] 272 Capital Fund LP Counterparties [domain] Counterparties [domain] Share price per ADS (usd per share) Share Price Per ADS Share Price Per ADS Treasury shares Treasury shares [member] Past due status [domain] Past due status [domain] Total identifiable net assets at fair value Identifiable assets acquired (liabilities assumed) Convertible instruments [member] Convertible instruments [member] Net increase in cash and cash equivalents Increase (decrease) in cash and cash equivalents before effect of exchange rate changes Types of share-based payment arrangements [axis] Types of share-based payment arrangements [axis] Rest of Asia Asia Pacific [Member] Gains (losses) on change in fair value of the remaining derivatives Gains (Losses) On Change In Fair Value Of The Remaining Derivatives Gains (Losses) On Change In Fair Value Of The Remaining Derivatives Maximum percentage of ordinary shares provided to cover underwriter's over-allotment option Maximum Percentage Of Ordinary Shares Placed Within Offering Provided To Cover Underwriter's Over-allotment Option Maximum Percentage Of Ordinary Shares Placed Within Offering Provided To Cover Underwriter's Over-allotment Option Interest on loans Interest expense on borrowings Title of 12(b) Security Title of 12(b) Security License and services agreement Deferred Income Classified as Non-current, Strategic Agreement Deferred Income Classified as Non-current, Strategic Agreement Gain (loss) on derecognition of financial liabilities Gain (Loss) On Derecognition Of Financial Liabilities Gain (Loss) On Derecognition Of Financial Liabilities Disclosure of subsidiaries [line items] Disclosure of subsidiaries [line items] Increase (decrease) through non-cash impact of amendment Increase (Decrease) Through Non-Cash Impact Of Amendment, Liabilities Arising From Financing Activities Increase (Decrease) Through Non-Cash Impact Of Amendment, Liabilities Arising From Financing Activities Issue of shares and warrants Issue of equity Total current Current Financial Assets, At Fair Value Current Financial Assets, At Fair Value Weighted average lessee's incremental borrowing rate applied to lease liabilities recognised at date of initial application of IFRS 16 Weighted average lessee's incremental borrowing rate applied to lease liabilities recognised at date of initial application of IFRS 16 Current contract liabilities License and Services Agreement, Current Contract Liability License and Services Agreement, Current Contract Liability Royalties Royalties [Member] Royalties Proceeds (repayment of) from interest-bearing receivables financing, net Proceeds From (Repayment Of) Interest-Bearing Receivables Financing Proceeds From (Repayment Of) Interest-Bearing Receivables Financing Proceeds from related party loans Cash advances and loans from related parties Second Strategic Partner, Fourth Amendment Contract, Second Strategic Partner, Fourth Amendment Contract, [Member] Second Strategic Partner, Fourth Amendment Contract, Research and Development Arrangement, Contract to Perform for Others, Type [Axis] Research And Development Arrangement, Contract To Perform For Others, Type 1 [Axis] Research And Development Arrangement, Contract To Perform For Others, Type [Axis] Return on plan assets excl. interest income Return on plan assets excluding interest income or expense, net of tax, defined benefit plans Interest rate risk impact Interest Rate Risk Impact Interest Rate Risk Impact Agreement [Axis] Agreement [Axis] Agreement Deferred tax effect, equity Adjustments To Additional Paid In Capital, Convertible Debt With Conversion Feature1 Adjustments To Additional Paid In Capital, Convertible Debt With Conversion Feature1 Decrease in volatility rate used in sensitivity analysis, percent Decrease In Volatility Rate Used In Sensitivity Analysis, Percent Decrease In Volatility Rate Used In Sensitivity Analysis, Percent Warrants, exercise price per ADS (in usd per share) Warrants, Exercise Price Per ADS Warrants, Exercise Price Per ADS Convertible debt embedded derivative Convertible Borrowings embedded derivative [Member] Convertible Borrowings embedded derivative Rental charges Rent Expense on Leases Rent Expense on Leases Depreciation charge for the year Depreciation, property, plant and equipment including right-of-use assets Property, plant and equipment including right-of-use assets [domain] Property, plant and equipment including right-of-use assets [domain] Subsidiaries [domain] Subsidiaries [domain] Repayments of borrowings, classified as financing activities Repayment of government loans Repayments of borrowings, classified as financing activities Higher of conversion price Higher Of Conversion Price Higher Of Conversion Price Schedule of Cost of Revenue and Operating Expenses Disclosure Of Cost Of Sales, Operating Expenses, And Employee Benefits Explanatory [Table Text Block] Disclosure Of Cost Of Sales, Operating Expenses, And Employee Benefits Explanatory [Table Text Block] Other provisions Miscellaneous other provisions [member] Components, net Current raw materials and current production supplies Borrowings by name [axis] Borrowings by name [axis] Total current Current financial assets Trade payables and other current liabilities Disclosure of trade and other payables [text block] Proceeds from issue of convertible debt Proceeds From Issue Of Convertible Debt Proceeds From Issue Of Convertible Debt Shares Issued and Fully Paid Disclosure of classes of share capital [text block] Schedule of Trade Payables and Other Current Liabilities Disclosure Of Trade And Other Current Payables Explanatory [Table Text Block] Disclosure Of Trade And Other Current Payables Explanatory [Table Text Block] Schedule of Non-Interest Bearing Trade Receivables Schedule of Accounts, Notes, Loans and Financing Receivable 1 [Table Text Block] Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Accumulated impairment Accumulated impairment [member] Board Of Directors [Member] Board Of Directors [Member] Board Of Directors [Member] Commitments and contingencies Disclosure of commitments and contingent liabilities [text block] Information about financial instruments Disclosure of financial instruments [text block] Purchase of digital assets Purchase Of Digital Assets Purchase Of Digital Assets Schedule of Useful Lives Most Commonly Used Disclosure of detailed information about property, plant and equipment [text block] Classes of intangible assets and goodwill [domain] Classes of intangible assets and goodwill [domain] Borrowings, interest rate Interest rate Borrowings, interest rate Net cash flow from (used in) investments activities Cash flows from (used in) investing activities Number of units granted during the year Number Of Share Options And Other Equity Instruments Granted In Share-Based Payment Arrangement Number Of Share Options And Other Equity Instruments Granted In Share-Based Payment Arrangement Withholding tax Withholding Tax Withholding Tax Inventories Inventory recognised as of acquisition date New IFRSs [domain] New IFRSs [domain] 5G New Product Development, Team Of Engineers 5G New Product Development, Team Of Engineers [Member] 5G New Product Development, Team Of Engineers Disclosure of detailed information about intangible assets [line items] Disclosure of detailed information about intangible assets [line items] Total non-current Non-current financial assets IT and Office Equipment, Right-of-use Assets IT and Office Equipment, Right-of-use Assets [Member] IT and Office Equipment, Right-of-use Assets [Member] Wages and benefits Employee benefits expense Corporate information Disclosure Of Nature Of Business, Explanatory [Text Block] Disclosure Of Nature Of Business, Explanatory [Text Block] Third-Party Licences Third-Party Licences [Member] Third-Party Licences Amortization Amortisation, intangible assets other than goodwill Proceeds from issuing other equity instruments Proceeds from issuing other equity instruments Deposits and other receivables Loans And Other Receivables [Member] Loans And Other Receivables [Member] Total current assets Current assets Gains (losses) on financial liabilities at fair value through profit or loss Gains (losses) on financial liabilities at fair value through profit or loss Financial expense Financial Expense [Member] Financial Expense [Member] Customer [Axis] Customer [Axis] Increase in volatility rate used in sensitivity analysis, percent Increase In Volatility Rate Used In Sensitivity Analysis, Percent Increase In Volatility Rate Used In Sensitivity Analysis, Percent Tax expense (income) during the year recognized in Profit or Loss Deferred tax expense (income) recognised in profit or loss DBO at 31.12. with DR +0.25% Discount Rate Plus 0.25% [Member] Discount Rate Plus 0.25% Goods or services transferred over time [member] Goods or services transferred over time [member] Interest expense on defined benefit obligation Interest expense, defined benefit plans Types of risks [axis] Types of risks [axis] Number of treasury shares repurchased (in shares) Number Of Treasury Shares Repurchased Number Of Treasury Shares Repurchased Amortization of capitalized development costs Capitalized Research And Development Costs, Amortization Capitalized Research And Development Costs, Amortization Purchase commitments Purchase Commitment, Remaining Minimum Amount Committed1 Purchase Commitment, Remaining Minimum Amount Committed1 Disclosure of transactions between related parties [table] Disclosure of transactions between related parties [table] Special tax rate Special Tax Rate Special Tax Rate Included in cost of revenue: Cost Of Sales 1 [Member] Cost Of Sales [Member] Types of hedges [axis] Types of hedges [axis] Disclosure of Leases [Line Items] Disclosure of Leases [Line Items] [Line Items] for Disclosure of Leases [Table] Amount of guarantee secured, percentage Guarantee Secured by Collateral, Percent Guarantee Secured by Collateral, Percent Impact of French income taxed under IP Box regime at 10% Tax Expense(Income) At Ip Special Tax Rate Tax Expense(Income) At Ip Special Tax Rate Sequans Communications SAS Sequans Communications SAS [Member] Sequans Communications SAS Par value per share (in usd per share) Par value per share Par value per share Property, plant and equipment Disclosure of property, plant and equipment [text block] Other revenue Other revenue Future Minimum Undiscounted Lease Payments Disclosure of maturity analysis of operating lease payments [text block] Foreign exchange impact Foreign Exchange Differences On Defined Benefit Obligations Foreign Exchange Differences On Defined Benefit Obligations Revenue Risk [Member] Revenue Risk [Member] Revenue Risk [Member] Proceeds from interest-bearing research project financing Proceeds From Borrowings Of Research Project Financing Issued Proceeds From Borrowings Of Research Project Financing Issued Expense for defined contributions plans Post-employment benefit expense, defined contribution plans Amendment Flag Amendment Flag Components of equity [domain] Components of equity [domain] Expense of restructuring activities Expense of restructuring activities Condensed Income Statements, Captions [Line Items] Condensed Income Statements, Captions [Line Items] Amortization and impairment of intangible assets Adjustments For Amortisation And Impairment Loss (Reversal Of Impairment Loss) Recognized In Profit Or Loss, Intangible Assets Adjustments For Amortisation And Impairment Loss (Reversal Of Impairment Loss) Recognized In Profit Or Loss, Intangible Assets sensitivity analysis, decrease in volatility rate, impact on in derivative fair value increase in volatility rate Sensitivity Analysis, Decrease In Volatility Rate, Impact On In Derivative Fair Value Increase In Volatility Rate Sensitivity Analysis, Decrease In Volatility Rate, Impact On In Derivative Fair Value Increase In Volatility Rate Non-current contract liabilities License and Services Agreement, Non-current Contract Liability License and Services Agreement, Non-current Contract Liability Loans and finance leases related to convertible debts issued and government loans granted Loans And Finance Leases Related To Convertible Debts Issued And Government Loans Granted [Member] Loans And Finance Leases Related To Convertible Debts Issued And Government Loans Granted [Member] Sensitivity analysis, increase in volatility rate, impact on in derivative fair value increase in volatility rate Sensitivity Analysis, Increase In Volatility Rate, Impact On In Derivative Fair Value Increase In Volatility Rate Sensitivity Analysis, Increase In Volatility Rate, Impact On Derivative Fair Value Temporary difference, unused tax losses and unused tax credits [axis] Temporary difference, unused tax losses and unused tax credits [axis] Provision used, other provisions Released (used) during the year Provision used, other provisions Range [domain] Range [domain] Classes of contingent liabilities [axis] Classes of contingent liabilities [axis] Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income, Excluding Reserve Of Exchange Differences On Translation [Member] Accumulated Other Comprehensive Income, Excluding Reserve Of Exchange Differences On Translation [Member] Government grants, loans and research tax credits Description Of Accounting Policy For Government Grants, Loans And Research Tax Credits [Policy Text Block] Description Of Accounting Policy For Government Grants, Loans And Research Tax Credits [Policy Text Block] Increase (Decrease) in trade payables and other liabilities Adjustments for increase (decrease) in trade and other payables Interest income Interest income Accrued interest Non-Current Interest Payable, Research Project Financing Non-Current Interest Payable, Research Project Financing Other current liabilities Other Financial Liabilities [Member] Other Financial Liabilities [Member] Number of units exercisable at period end Number Of Share Options And Other Equity Instruments Exercisable In Share-Based Payment Arrangement Number Of Share Options And Other Equity Instruments Exercisable In Share-Based Payment Arrangement Disclosure of investment in Bitcoin Disclosure Of Investment In Bitcoin [Table Text Block] Disclosure Of Investment In Bitcoin Renesas Electronics Corporation Renesas Electronics Corporation [Member] Renesas Electronics Corporation Previously stated Previously stated [member] Total non-current Non-current financial liabilities Exercise of common warrants issued in July 2025 Increase (decrease) through exercise of warrants, equity Impaired additional trade receivables Impairment loss recognised in profit or loss, trade receivables Strategic Partner Strategic Partner [Member] Strategic Partner License and services agreement (See Note 22) Deferred Income Classified as Current, Strategic Agreement Deferred Income Classified as Current, Strategic Agreement DBO at 31.12. with IR +0.25% Interest Rate Plus 0.25% [Member] Interest Rate Plus 0.25% Investment in ACP Advanced Circuit Pursuit, net of cash acquired Purchase Of Investment In ACP Advanced Circuit Pursuit, Net Of Cash Acquired Purchase Of Investment In ACP Advanced Circuit Pursuit, Net Of Cash Acquired Exercise of pre-funded warrants issued in July 2025 Increase (Decrease) Through Exercise Of Pre-Funded Warrants, Equity Increase (Decrease) Through Exercise Of Pre-Funded Warrants, Equity Arising (released) during the year Additional provisions, other provisions Warrant, subscription price (in USD per share) Warrant, Subscription Price Warrant, Subscription Price Address Type [Domain] Address Type [Domain] Notional amount Government debt instruments Notional amount Government loans Current Government Loans, Net Current Government Loans, Net Government grant advances Current Government Grant Advances Current Government Grant Advances Lease liabilities Current Current lease liabilities Operating segments [Abstract] Operating segments [Abstract] Operating segments [Abstract] Number of banks Number Of Banks For Which Cash And Cash Equivalents Are Held Number Of Banks For Which Cash And Cash Equivalents Are Held Currency [Axis] Currency [Axis] Continuing involvement in derecognised financial assets by type of transfer [axis] Continuing involvement in derecognised financial assets by type of transfer [axis] Diluted earnings (loss) per share (in dollars per share) Diluted earnings (loss) per share Maturity [domain] Maturity [domain] Costs of Public Offerings Description of accounting policy for issued capital [text block] Schedule of Subsidiaries Disclosure of subsidiaries [text block] Categories of financial liabilities [axis] Categories of financial liabilities [axis] Issue of shares in private placement (in shares) Increase (Decrease) In Number Of Ordinary Shares Issued, Private Placement Increase (Decrease) In Number Of Ordinary Shares Issued, Private Placement Remeasurement of non-monetary accounts Remeasurement Of Non-Monetary Accounts [Member] Remeasurement Of Non-Monetary Accounts [Member] Disclosure of terms and conditions of share-based payment arrangement [table] Disclosure of terms and conditions of share-based payment arrangement [table] Strategic Partner, Second Amendment Contract, 5G Chipset China Strategic Partner, Second Amendment Contract, 5G Chipset China [Member] Strategic Partner, Second Amendment Contract, 5G Chipset China Number of units exercised during the year Number Of Share Options And Other Equity Instruments Exercised Or Vested In Share-Based Payment Arrangement Number Of Share Options And Other Equity Instruments Exercised Or Vested In Share-Based Payment Arrangement Disclosure of reconciliation of liabilities arising from financing activities [table] Disclosure of reconciliation of liabilities arising from financing activities [table] Schedule of Income and Share Data Used in Basic and Diluted Earnings (Loss) Per Share Computations Earnings per share [text block] Receivables from taxes other than income tax Receivables from taxes other than income tax Fair value Financial Instruments, Assets, Fair Value [Abstract] Financial Instruments, Assets, Fair Value [Abstract] Counterparty Name [Axis] Counterparty Name [Axis] Disclosure of detailed information about property, plant and equipment [table] Disclosure of detailed information about property, plant and equipment [table] Defined benefit liability at Dec. 31 Net defined benefit liability Digital assets, pledged as collateral for convertible debt Digital assets, opening balance Digital assets, closing balance Digital Assets Digital Assets Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Weighted average number of shares used for computing: Weighted average ordinary shares used in calculating basic and diluted earnings per share [abstract] Financial income and expense Description of accounting policy for finance income and costs [text block] Changes in tax rates Changes in tax rates or tax laws enacted or announced [member]