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  <xsd:element id="gsat_LossContingencySettlementAgreementTotalNumberofBoardofDirectors" name="LossContingencySettlementAgreementTotalNumberofBoardofDirectors" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="gsat_LossContingencySettlementAgreementTransactionthatNeedBoardApprovalAmount" name="LossContingencySettlementAgreementTransactionthatNeedBoardApprovalAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_MILSATLLCMember" name="MILSATLLCMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_NonCashInterestExpenseCashFlow" name="NonCashInterestExpenseCashFlow" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="gsat_NoncashExpenseRelatedtoLegalSettlement" name="NoncashExpenseRelatedtoLegalSettlement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="gsat_NumberOfSatellites" name="NumberOfSatellites" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_NumberofBoardofDirectors" name="NumberofBoardofDirectors" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_NumberofDirectorsResigned" name="NumberofDirectorsResigned" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_OperatingLeasesAnnualBaseRental" name="OperatingLeasesAnnualBaseRental" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="gsat_OperatingLeasesAnnualRentEscalationPercentage" name="OperatingLeasesAnnualRentEscalationPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="gsat_OperatingLossCarryforwardsPercentageExpiring" name="OperatingLossCarryforwardsPercentageExpiring" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_OtherAccruedExpenses" name="OtherAccruedExpenses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="gsat_OtherAssetsPolicyPolicyTextBlock" name="OtherAssetsPolicyPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_OtherCountriesMember" name="OtherCountriesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_PaymentsForProceedsFromInvestmentsInBusinesses" name="PaymentsForProceedsFromInvestmentsInBusinesses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="gsat_PaymentstoAcquireMachineryandEquipmentProcurementCosts" name="PaymentstoAcquireMachineryandEquipmentProcurementCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="gsat_PercentageOfCapitalStockPledgedAsCollateral" name="PercentageOfCapitalStockPledgedAsCollateral" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="gsat_PercentageOfGuaranteeProvidedByFrenchExportCreditAgencyToLendingSyndicate" name="PercentageOfGuaranteeProvidedByFrenchExportCreditAgencyToLendingSyndicate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_PriorTo2026Member" name="PriorTo2026Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_ProductDuplexMember" name="ProductDuplexMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_ProductIGOMember" name="ProductIGOMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_ProductOtherMember" name="ProductOtherMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_ProductSPOTMember" name="ProductSPOTMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_ProductSimplexMember" name="ProductSimplexMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_PropertyPlantAndEquipmentAdditionalDisclosuresAxis" name="PropertyPlantAndEquipmentAdditionalDisclosuresAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_PropertyPlantAndEquipmentAdditionalDisclosuresDomain" name="PropertyPlantAndEquipmentAdditionalDisclosuresDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_PublicStockOfferingMember" name="PublicStockOfferingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_PurchasedProductsSubscriberEquipmentDevicesMember" name="PurchasedProductsSubscriberEquipmentDevicesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_ReductionOfDerivativeLiabilityArisingFromSettlementOfDebt" name="ReductionOfDerivativeLiabilityArisingFromSettlementOfDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_RegulatoryAuthorizationsMember" name="RegulatoryAuthorizationsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_ReimbursementCosts" name="ReimbursementCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="gsat_SaleofStockNetProceedsfromSaleofStockPercentage" name="SaleofStockNetProceedsfromSaleofStockPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_ScheduleOfAmortizationExpensesTableTextBlock" name="ScheduleOfAmortizationExpensesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_ScheduleOfDepreciationExpenseTableTextBlockTableTextBlock" name="ScheduleOfDepreciationExpenseTableTextBlockTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_ScheduleOfFairValueOfPlanAssetsTableTextBlock" name="ScheduleOfFairValueOfPlanAssetsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_SecondGenerationSatelliteOnGroundSpareMember" name="SecondGenerationSatelliteOnGroundSpareMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_SecondGenerationSatellitesMember" name="SecondGenerationSatellitesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_SecondGenerationSoftwareUpgradesMember" name="SecondGenerationSoftwareUpgradesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_ServicesDuplexMember" name="ServicesDuplexMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_ServicesIGOMember" name="ServicesIGOMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_ServicesOtherMember" name="ServicesOtherMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_ServicesSPOTMember" name="ServicesSPOTMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_ServicesSimplexMember" name="ServicesSimplexMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_SettlementAgreementSharesAvailableForSaleValue" name="SettlementAgreementSharesAvailableForSaleValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="gsat_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumAmountPerEmployee" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumAmountPerEmployee" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="gsat_SharePricePercentageDecrease" name="SharePricePercentageDecrease" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_SharebasedCompensationArrangementbySharebasedPaymentAwardAcceleratedVestingNumberofDirectors" name="SharebasedCompensationArrangementbySharebasedPaymentAwardAcceleratedVestingNumberofDirectors" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_SingleCustomerContractMember" name="SingleCustomerContractMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_SoftwareFacilitiesandEquipmentMember" name="SoftwareFacilitiesandEquipmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_SpaceComponentMember" name="SpaceComponentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_StandardProductWarrantyPeriod" name="StandardProductWarrantyPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_StockIssuanceSettlementPeriodUponConversionAndAutomaticConversion" name="StockIssuanceSettlementPeriodUponConversionAndAutomaticConversion" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_StockIssuedDuringPeriodSharesWarrantsExercised" name="StockIssuedDuringPeriodSharesWarrantsExercised" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="gsat_StockIssuedDuringPeriodValueIssuedforSettlement" name="StockIssuedDuringPeriodValueIssuedforSettlement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="gsat_StockIssuedDuringPeriodValueWarrantsExercised" name="StockIssuedDuringPeriodValueWarrantsExercised" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_SummaryOfSignificantAccountingPoliciesLineItems" name="SummaryOfSignificantAccountingPoliciesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_SummaryOfSignificantAccountingPoliciesTable" name="SummaryOfSignificantAccountingPoliciesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_TerrapinMember" name="TerrapinMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_TesamArgentinaS.AMember" name="TesamArgentinaS.AMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_ThalesAleniaSpaceMember" name="ThalesAleniaSpaceMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="gsat_ThermoCapitalPartnersLlcMember" name="ThermoCapitalPartnersLlcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
</xsd:schema>
