v3.26.1
Cover Page
 12 Months Ended
Dec. 31, 2025
shares
Document Information [Line Items]  
Document Type 20-F
Document Registration Statement false
Document Annual Report true
Document Period End Date Dec. 31, 2025
Current Fiscal Year End Date --12-31
Document Transition Report false
Document Shell Company Report false
Entity File Number 001-35135
Entity Registrant Name SEQUANS COMMUNICATIONS S.A.
Entity Address, Address Line One 15-55 Boulevard Charles de Gaulle
Entity Address, Postal Zip Code 92700
Entity Address, City or Town Colombes
Entity Address, Country FR
Entity Incorporation, State or Country Code I0
Title of 12(b) Security Ordinary shares, nominal value €0.01 per share
Trading Symbol SQNS
Security Exchange Name NYSE
Entity Common Stock, Shares Outstanding 1,599,589,702
Entity Well-known Seasoned Issuer No
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Non-accelerated Filer
Entity Emerging Growth Company false
ICFR Auditor Attestation Flag false
Document Financial Statement Error Correction [Flag] false
Document Accounting Standard International Financial Reporting Standards
Entity Shell Company false
Amendment Flag false
Entity Central Index Key 0001383395
Document Fiscal Year Focus 2025
Document Fiscal Period Focus FY
American Depositary Shares, each representing four ordinary shares, nominal value €0.01 per share  
Document Information [Line Items]  
Title of 12(b) Security American Depositary Shares, each representing four ordinary shares, nominal value €0.01 per share
Trading Symbol SQNS
Security Exchange Name NYSE
Business Contact  
Document Information [Line Items]  
Entity Address, Address Line One 15-55 Boulevard Charles de Gaulle
Entity Address, Postal Zip Code 92700
Entity Address, City or Town Colombes
Entity Address, Country FR
Contact Personnel Name Georges Karam
City Area Code +33
Local Phone Number 1 70 72 16 00
Contact Personnel Fax Number 1 70 72 16 09