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	<link:linkbaseRef xlink:type="simple" xlink:href="sonm-20220630_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Definition Links" />
      </appinfo>
    </annotation>
    <import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
    <import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" />
    <import namespace="http://xbrl.sec.gov/dei/2022" schemaLocation="https://xbrl.sec.gov/dei/2022/dei-2022.xsd" />
    <import namespace="http://fasb.org/us-gaap/2022" schemaLocation="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd" />
    <import namespace="http://fasb.org/us-types/2022" schemaLocation="https://xbrl.fasb.org/us-gaap/2022/elts/us-types-2022.xsd" />
    <import namespace="http://www.xbrl.org/dtr/type/2020-01-21" schemaLocation="https://www.xbrl.org/dtr/type/2020-01-21/types.xsd" />
    <import namespace="http://xbrl.sec.gov/country/2022" schemaLocation="https://xbrl.sec.gov/country/2022/country-2022.xsd" />
    <import namespace="http://fasb.org/srt/2022" schemaLocation="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd" />
    <import namespace="http://fasb.org/srt-types/2022" schemaLocation="https://xbrl.fasb.org/srt/2022/elts/srt-types-2022.xsd" />
    <element id="SONM_AJPHoldingCompanyLLCMember" name="AJPHoldingCompanyLLCMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_SubscriptionAgreementMember" name="SubscriptionAgreementMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_SmartPhonesMember" name="SmartPhonesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_FeaturePhonesMember" name="FeaturePhonesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_AccessoriesAndOtherMember" name="AccessoriesAndOtherMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_AccountsPayableFinancingAgreementMember" name="AccountsPayableFinancingAgreementMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_TransactionBonusPlanMember" name="TransactionBonusPlanMember" 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_CanadaAndLatinAmericaMember" name="CanadaAndLatinAmericaMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_EuropeAndMiddleEastMember" name="EuropeAndMiddleEastMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_CustomerAMember" name="CustomerAMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_CustomerBMember" name="CustomerBMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_CustomerCMember" name="CustomerCMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_ConsumerDMember" name="ConsumerDMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_ConsumerEMember" name="ConsumerEMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_FirstClosingMember" name="FirstClosingMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_SecondClosingMember" name="SecondClosingMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_ChiefFinancialOfficerAndPresidentMember" name="ChiefFinancialOfficerAndPresidentMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_StockIssuedDuringPeriodValueRestrictedStockUnits" name="StockIssuedDuringPeriodValueRestrictedStockUnits" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_StockIssuedDuringPeriodSharesRestrictedStockUnits" name="StockIssuedDuringPeriodSharesRestrictedStockUnits" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_EquityValueChangesToLeaseAdoption" name="EquityValueChangesToLeaseAdoption" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_OperatingLeaseRightOfUseAssetAmortizationExpenseAndLeaseInterestExpense" name="OperatingLeaseRightOfUseAssetAmortizationExpenseAndLeaseInterestExpense" 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_IncreaseDecreaseInWarrantyLiabilities" name="IncreaseDecreaseInWarrantyLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_ProceedsFromSubscriptionAgreementPriorToIssuanceOfCommonStock" name="ProceedsFromSubscriptionAgreementPriorToIssuanceOfCommonStock" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_DeferredOfferingCostsInAccruedExpenses1" name="DeferredOfferingCostsInAccruedExpenses1" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_DisclosureLeasesAbstract" name="DisclosureLeasesAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" 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_RightOfUseAssetsAndLeaseLiabilityTableTextBlock" name="RightOfUseAssetsAndLeaseLiabilityTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_AllowancesForDistributorProductReturns" name="AllowancesForDistributorProductReturns" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_EstimatedLifeOfParticularModelPhone" name="EstimatedLifeOfParticularModelPhone" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_InventoryAccessories" name="InventoryAccessories" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_DeferredServices" name="DeferredServices" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_AdvancesToThirdPartyManufacturers" name="AdvancesToThirdPartyManufacturers" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_EquityTransactionCosts" name="EquityTransactionCosts" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_AccruedCustomerAllowancesCurrent" name="AccruedCustomerAllowancesCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_AccrualForGoodsReceivedNotInvoiced" name="AccrualForGoodsReceivedNotInvoiced" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_AccruedContractualObligationsCurrent" name="AccruedContractualObligationsCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_AccruedResearchAndDevelopmentCurrent" name="AccruedResearchAndDevelopmentCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_AccruedShippingExpensesCurrent" name="AccruedShippingExpensesCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_AccruedReturnsAllowance" name="AccruedReturnsAllowance" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_AccruedLegalExpensesCurrent" name="AccruedLegalExpensesCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_CostsForEquityTransactionAccrued" name="CostsForEquityTransactionAccrued" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_LeaseLiabilityAdoptionOfAsc842" name="LeaseLiabilityAdoptionOfAsc842" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_RightOfUseAssetsAdoptionOfAsc842" name="RightOfUseAssetsAdoptionOfAsc842" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_DerecognitionOfDeferredRentLiability" name="DerecognitionOfDeferredRentLiability" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_OperatingLeaseRightOfUseAssetReduced" name="OperatingLeaseRightOfUseAssetReduced" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_PropertyTaxesAndOperatingExpenses" name="PropertyTaxesAndOperatingExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_ShortTermLeaseRentPayments" name="ShortTermLeaseRentPayments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_DebtInstrumentPeriodicPaymentNumberOfEqualQuarterlyInstallments" name="DebtInstrumentPeriodicPaymentNumberOfEqualQuarterlyInstallments" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm" name="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsReleasedInPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsReleasedInPeriod" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_RoyaltyPaymentPercentOfNetRevenues" name="RoyaltyPaymentPercentOfNetRevenues" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_PercentageOfConsiderationPayable" name="PercentageOfConsiderationPayable" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_TermOfPlan" name="TermOfPlan" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_StockIssuedDuringPeriodSharesNewIssuesToBeIssued" name="StockIssuedDuringPeriodSharesNewIssuesToBeIssued" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_StockIssuedDuringPeriodValueNewIssuesToBeIssued" name="StockIssuedDuringPeriodValueNewIssuesToBeIssued" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_PercentageForCapitalOutstandingStock" name="PercentageForCapitalOutstandingStock" nillable="true" xbrli:periodType="instant" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_MajorityAllowanceDistribution" name="MajorityAllowanceDistribution" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_CustomerMember" name="CustomerMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="SONM_AccruedProceedsFromSubscriptionAgreementPriorStockIssuanceCurrent" name="AccruedProceedsFromSubscriptionAgreementPriorStockIssuanceCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
</schema>
