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    <element id="SONM_PaceCarAcquisitionsLLCMember" name="PaceCarAcquisitionsLLCMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_AssetPurchaseAgreementMember" name="AssetPurchaseAgreementMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_PurchaseAgreementMember" name="PurchaseAgreementMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_TheFebruaryNoteMember" name="TheFebruaryNoteMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_MajorTriggerEventMember" name="MajorTriggerEventMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_MinorTriggerEventMember" name="MinorTriggerEventMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_JulyPurchaseAgreementMember" name="JulyPurchaseAgreementMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_JulyNoteMember" name="JulyNoteMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_MembershipInterestPurchaseAgreementMember" name="MembershipInterestPurchaseAgreementMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_ChEFPurchaseAgreementMember" name="ChEFPurchaseAgreementMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_PublicOfferingMember" name="PublicOfferingMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_PlacementAgentWarrantsMember" name="PlacementAgentWarrantsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_InvestorOneMember" name="InvestorOneMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_InvestorTwoMember" name="InvestorTwoMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_SalesAgreementMember" name="SalesAgreementMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_UnvestedStockOptionsMember" name="UnvestedStockOptionsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_SharesSubjectToOptionsToPurchaseCommonStockMember" name="SharesSubjectToOptionsToPurchaseCommonStockMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_UnvestedRestrictedStockUnitsMember" name="UnvestedRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_SharesSubjectToWarrantsToPurchaseCommonStockMember" name="SharesSubjectToWarrantsToPurchaseCommonStockMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_InvestmentInDnaXLlc" name="InvestmentInDnaXLlc" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_DeferredTaxAssets" name="DeferredTaxAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_DeferredTaxLiability" name="DeferredTaxLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_IncomeTaxExpenseFromContinuingOperations" name="IncomeTaxExpenseFromContinuingOperations" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_StockIssuedDuringPeriodValueRestrictedOfUnits" name="StockIssuedDuringPeriodValueRestrictedOfUnits" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_StockIssuedDuringPeriodSharesRestrictedOfUnits" name="StockIssuedDuringPeriodSharesRestrictedOfUnits" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_GainOnSaleOfAssetsNetOfCash" name="GainOnSaleOfAssetsNetOfCash" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_ReleaseOfCustomerAllowanceLiability" name="ReleaseOfCustomerAllowanceLiability" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_InvestmentIncomeFromDnaXLlc" name="InvestmentIncomeFromDnaXLlc" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_IncreaseDecreaseInNonTradeReceivable" name="IncreaseDecreaseInNonTradeReceivable" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_IncreaseDecreaseInContractFulfilmentAssets" name="IncreaseDecreaseInContractFulfilmentAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_IncreaseDecreaseInDeferredTaxAssets" name="IncreaseDecreaseInDeferredTaxAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_PaymentsToCashReceiveFromAssetSale" name="PaymentsToCashReceiveFromAssetSale" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_RepaymentOfNotesPayableFromProceedsOfAssetSale" name="RepaymentOfNotesPayableFromProceedsOfAssetSale" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_ReceivableForCashHeldBackFromAssetSale" name="ReceivableForCashHeldBackFromAssetSale" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_ShareBasedCompensationCountinuingOperations" name="ShareBasedCompensationCountinuingOperations" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_ShareBasedCompensationDiscontinuedOperations" name="ShareBasedCompensationDiscontinuedOperations" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_DescriptionOfBusinessPolicyTextBlock" name="DescriptionOfBusinessPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_LiquidityAndAbilityToContinueAsGoingConcernPolicyTextBlock" name="LiquidityAndAbilityToContinueAsGoingConcernPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_ReverseStockSplitPolicyTextBlock" name="ReverseStockSplitPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_AssetsHeldForSalePolicyTextBlock" name="AssetsHeldForSalePolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_ReceivablesFinancingAgreementPolicyTextBlock" name="ReceivablesFinancingAgreementPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_NonRecurringEngineeringToolingAndPurchasedSoftwareLicensesPolicyPolicyTextBlock" name="NonRecurringEngineeringToolingAndPurchasedSoftwareLicensesPolicyPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_DebtInstrumentPrincipalOutstanding" name="DebtInstrumentPrincipalOutstanding" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_ExtinguishmentOfDebtAccruedInterest" name="ExtinguishmentOfDebtAccruedInterest" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_ForeignCashAndCashEquivalentsAtCarryingValue" name="ForeignCashAndCashEquivalentsAtCarryingValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_EquityMethodInvestmentVotingInterestsPercentage" name="EquityMethodInvestmentVotingInterestsPercentage" nillable="true" xbrli:periodType="instant" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_MoneyMarketFundsFairValueDisclosure" name="MoneyMarketFundsFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_DerivativeLiabilityConversionFeature" name="DerivativeLiabilityConversionFeature" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_WorkingCapital" name="WorkingCapital" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_PaymentsForCash" name="PaymentsForCash" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_DisposalGroupNontradeReceivablesCurrent" name="DisposalGroupNontradeReceivablesCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_DisposalGroupContractFulfilmentAssets" name="DisposalGroupContractFulfilmentAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_DisposalGroupIncludingDiscontinuedOperationRevenueExcludingRelatedParty" name="DisposalGroupIncludingDiscontinuedOperationRevenueExcludingRelatedParty" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_DisposalGroupIncludingDiscontinuedOperationResearchAndDevelopment" name="DisposalGroupIncludingDiscontinuedOperationResearchAndDevelopment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_DisposalGroupIncludingDiscontinuedOperationSalesAndMarketing" name="DisposalGroupIncludingDiscontinuedOperationSalesAndMarketing" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_DisposalGroupIncludingDiscontinuedOperationOperatingExpenses" name="DisposalGroupIncludingDiscontinuedOperationOperatingExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetIncomeLossFromOperations" name="DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetIncomeLossFromOperations" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_DiscontinuedOperationIncomeLossFromDiscontinuedOperationGainOnSaleOfAssets" name="DiscontinuedOperationIncomeLossFromDiscontinuedOperationGainOnSaleOfAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_DiscontinuedOperationIncomeLossFromOtherIncome" name="DiscontinuedOperationIncomeLossFromOtherIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
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    <element id="SONM_IncreaseDecreaseInContractFulfillmentAssets" name="IncreaseDecreaseInContractFulfillmentAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_CashReceivedFromAssetSale" name="CashReceivedFromAssetSale" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_DebtInstrumentInterestRateStatedPercentageInCaseOfDefault" name="DebtInstrumentInterestRateStatedPercentageInCaseOfDefault" nillable="true" xbrli:periodType="instant" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_DebtInstrumentOutstandingPercentage" name="DebtInstrumentOutstandingPercentage" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_DebtInstrumentRedemptionAmount" name="DebtInstrumentRedemptionAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_DebtInstrumentAccruedInterestRateStatedPercentage" name="DebtInstrumentAccruedInterestRateStatedPercentage" nillable="true" xbrli:periodType="instant" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_CapitalStockParValue" name="CapitalStockParValue" nillable="true" xbrli:periodType="instant" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_RightToAppointBoardOfDirectorsDescription" name="RightToAppointBoardOfDirectorsDescription" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_MembershipInterestDescription" name="MembershipInterestDescription" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_PercentageOfCashFee" name="PercentageOfCashFee" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_WarrantsAdjustmentDescription" name="WarrantsAdjustmentDescription" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_BeneficiaryOwnershipLimitationPercentage" name="BeneficiaryOwnershipLimitationPercentage" nillable="true" xbrli:periodType="instant" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_SaleOfStockCommissionPercentage" name="SaleOfStockCommissionPercentage" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_CompensationRelatedCostsSharebasedPaymentsAbstract" name="CompensationRelatedCostsSharebasedPaymentsAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_CompensationRelatedCostsSharebasedPaymentsTable" name="CompensationRelatedCostsSharebasedPaymentsTable" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" />
    <element id="SONM_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercisableNumber" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercisableNumber" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsExercisableWeightedAverageExercisePriceExerciseable" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsExercisableWeightedAverageExercisePriceExerciseable" nillable="true" xbrli:periodType="instant" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_IncomeTaxDisclosureTable" name="IncomeTaxDisclosureTable" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" />
    <element id="SONM_IndemnificationValue" name="IndemnificationValue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_IncomeLossFromDisContinuingOperations" name="IncomeLossFromDisContinuingOperations" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_RelatedPartyTransactionsPolicyTextBlock" name="RelatedPartyTransactionsPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_DisposalGroupRelatedPartyReceivable" name="DisposalGroupRelatedPartyReceivable" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_DisposalGroupContractFulfillmentAssets" name="DisposalGroupContractFulfillmentAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_DiscontinuedOperationIncomeLossFromOtherIncomeExpense" name="DiscontinuedOperationIncomeLossFromOtherIncomeExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_ResearchAndDevelopmentExpensesMember" name="ResearchAndDevelopmentExpensesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_EffectiveIncomeTaxRateContinuingOperation" name="EffectiveIncomeTaxRateContinuingOperation" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_SecuritiesPurchaseAgreementMember" name="SecuritiesPurchaseAgreementMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
</schema>
