XD6U655AASmart Phone

ShenzhenTinnoMobileTechnology Corp. 27-001,SouthsideofTianlongmobileHQBuilding,TongfaSouthRoad,XiliStreet,NanshanDistrict,Shenzhen,PRC U.S. Agent Designation for Service of Process (Applicant and U.S. Agent are Separate Parties) TO:American Certification Body, Inc. 313 ParkAvenue Suite300 Falls Church, VA 22046 ATTENTION: FCC Certification – Section 2.911(d)(7) Information Designated U.S. Agent Company Name: TINNO USA INC Contact Name: Brandy Kang Street Address: 2301W.PLANOParkway,SUITE102 City/Province/Zip: Plano, TX 75075 Telephone No: (626) 200-5096 Email: [email protected] FRN #: 0033457680 This letter is to confirm that we (“the Designated U.S. Agent) have accepted the responsibility to act as the Designated U.S. Agent for Service of Process as required by section 47 CFR 2.911(d)(7) on behalf of theApplicantnoted below. U.S. Agent Signature: Date: 2023-10-14 Signed by (Printed Name/Title): Brandy Kang / CEO The Applicant acknowledges that they must maintain an agent for no less than one year after terminating all marketing and importation OR the conclusion of any Commission- related proceeding involving the equipment. The applicant further acknowledges their responsibility to inform the FCC whenever the Designated U.S. Agent information above changes. Applicant Company name: Shenzhen Tinno Mobile Technology Corp. Grantee Code: XD6 Contact Name: Xiaoping Li Street Address: 27-001, South side of Tianlong mobile HQ Building, Tongfa South Road, Xili Street, Nanshan District City/Province/Zip: Shenzhen /Guangdong/518000 Telephone No: (86) 755-86095550 Email: [email protected] FRN #: 0018783100 Applicant Signature 1 : Date:2023-10-14 Signed by (Printed Name/Title): Xiaoping Li / Manager 1 - Lettersshouldbeplacedonappropriateletterhead.

ShenzhenTinnoMobileTechnologyCorp. 27-001,SouthSideofTianlongMobileHeadquartersBuilding, TongfaSouthRoad,XiliCommunity,XiliStreet,NanshanDistrict,Shenzhen,PRC 120623-17rev9 ACB-FORM-FCC-Application-Letters-Covered-List-Attestation Date:July3,2024 FCCID:XD6U655AA AmericanCertificationBody,Inc. 313ParkAvenue Suite300 FallsChurch,VA22046 ToWhomItMayConcern: Statementfor47CFRsection2.911(d)(5)(i) ______ShenzhenTinnoMobileTechnologyCorp.______certifiesthatasofthedateofthe applicationtheequipmentforwhichauthorizationissoughtisnot“covered”equipment 1 prohibited fromreceivinganequipmentauthorizationpursuanttosection2.903oftheFCCrules. Iftheequipmentforwhichtheapplicantseeksauthorizationisproducedbyanyoftheentities identifiedonthecurrentCoveredList,includingaffiliatesorsubsidiariesofthenamedcompanies,the applicantmustincludeanexplanationonwhytheequipmentisnot“covered”equipment. AdditionalExplanation:<N/A> 1 -TheCommission’sCoveredListispublishedbythePublicSafetyandHomelandSecurityBureauandpostedontheCommission’swebsite.This CoveredList,whichisperiodicallyupdated,identifiesparticularequipment,producedbyparticularentities,thatconstitutes“covered”equipment. https://www.fcc.gov/supplychain/coveredlist. ShenzhenTinnoMobileTechnologyCorp. 27-001,SouthSideofTianlongMobileHeadquartersBuilding, TongfaSouthRoad,XiliCommunity,XiliStreet,NanshanDistrict,Shenzhen,PRC 120623-17rev9 Statementfor47CFRsection2.911(d)(5)(ii) ______ShenzhenTinnoMobileTechnologyCorp.______(“theapplicant”)certifiesthat,asofthedate ofthefilingofthisapplication,theapplicant☐-is/☑-isnot identifiedontheCoveredList(asaspecificallynamedentityoranyofitssubsidiariesoraffiliates– seeKDB986446Question5)asanentityproducing“covered”equipment. Thankyou, By:_________________________XiaopingLi_______ (Signature 2 )(Printname) Title:___Productcertificationmanager_______________________ Company:__ShenzhenTinnoMobileTechnologyCorp.Telephone:+86-755-8609-5550 2 -Lettersmustbeplacedonappropriateletterhead.

ShenzhenTinnoMobileTechnologyCorp. 27-001,SouthSideofTianlongMobileHeadquartersBuilding, TongfaSouthRoad,XiliCommunity,XiliStreet,NanshanDistrict,Shenzhen,PRC 050222-17 ACB-FORM-FCC-Application-Letters-Confidentiality-Lette Date:July3,2024 Subject:ConfidentialityRequestfor:_____XD6U655AA_____ PursuanttoFCC47CFR0.457(d)and0.459and/orICRSP-100,Section12.4,theapplicantrequeststhatapartofthe subjectapplication(s)beheldconfidential. TypeofConfidentialityRequestedExhibit ☐ShortTerm☒PermanentBlockDiagrams ☒ShortTerm---------------------------ExternalPhotos ☒ShortTerm☐Permanent* 1 InternalPhotos ☐ShortTerm☒PermanentOperationDescription/TheoryofOperation ☐ShortTerm☒PermanentPartsList&Placement/BOM ☐ShortTerm☒PermanentTune-UpProcedure ☐ShortTerm☒PermanentSchematics ☒ShortTerm---------------------------TestSetupPhotos ☒ShortTerm☐Permanent* 1 User’sManual ______ShenzhenTinnoMobileTechnologyCorp.____hasspentsubstantialeffortindevelopingthisproductandit isoneofthefirstofitskindinindustry.Havingthesubjectinformationeasilyavailableto"competition"would negatetheadvantagetheyhaveachievedbydevelopingthisproduct.Notprotectingthedetailsofthedesignwill resultinfinancialhardship. PermanentConfidentiality: Theapplicantrequeststheexhibitslistedaboveaspermanentlyconfidentialbepermanentlywithheldfrompublic reviewduetomaterialsthatcontaintradesecretsandproprietaryinformationnotcustomarilyreleasedtothepublic. Short-TermConfidentialityforFCCApplications: Theapplicantrequeststheexhibitsselectedaboveasshorttermconfidentialbewithheldfrompublicviewfora periodof__180__daysfromthedateoftheGrantofEquipmentAuthorizationandpriortomarketing.Thisisto avoidprematurereleaseofsensitiveinformationpriortomarketingorreleaseoftheproducttothepublic.Applicant isalsoawarethattheyareresponsibletonotifyACBintheeventinformationregardingtheproductortheproductis madeavailabletothepublicbeforetherequestedperiodhasexpired.ACBwillthenreleasethedocumentslisted aboveforpublicdisclosurepursuanttoFCCPublicNoticeDA04-1705. ShortTermConfidentialityforIndustryCanadaApplications: StartingMay2022,ISEDwillrecognizeshorttermconfidentialityoncertainexhibitsuntiltheintendeddateof marketing.Theapplicantrequeststheexhibitsselectedaboveasshorttermconfidentialbewithheldfrompublic viewuntil:(specifyISEDexpirationdate/dateofmarketing). Sincerely, By:__________________________XiaopingLi_____________________ (Signature/Title 2 )(Printname) 1 -Theasteriskeditems(*)requirefurtherinformationtobeprovidedtoACBbeforepermanentconfidentialitywillbeextendedtothese exhibits.PleaserefertoFCCKDB726920andthespecificDocumentlinkforD01foundat: https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=41731andreviewsectionII,3)regardingspecific informationthatmustaccompanytheserequests. 2 -MustbesignedbyapplicantcontactgivenforapplicantontheFCCsite,orbytheauthorizedagentifanappropriateauthorizedagent letterhasbeenprovided.Lettersshouldbeplacedonappropriateletterhead.

FederalCommunicationsCommission AuthorizationandEvaluationDivision 1435OaklandMillsRoad Columbia,MD21046 Date: SUBJECT:FCCApplicationfor(FCCID: XD6U655AA ) ToWhomItMayConcern: We,theundersigned,herebyauthorizeCTTL,TelecommunicationTechnologyLabs,CAICTon ourbehalf,toapplytotheFederalCommunicationsCommissiononourequipment.Anyandall actscarriedoutbyCTTL,TelecommunicationTechnologyLabs,CAICTonourbehalfshall havethesameeffectasactsofourown. ThisistoadvisethatweareinfullcompliancewiththeAnti-DrugAbuseAct.We,the applicant,arenotsubjecttoadenialoffederalbenefitspursuanttoSection5301oftheAnti- DrugActof1988,21USC853a,andnopartytotheapplicationissubjecttoadenialoffederal benefitspursuanttothatsection. Regards, _______________ NAME：Xiaoping.li Email:[email protected] 2024-7-3

ShenzhenTinnoMobileTechnologyCorp. 27-001,SouthSideofTianlongMobileHeadquartersBuilding,TongfaSouthRoad,XiliCommunity,XiliStreet,NanshanDistrict, Shenzhen,PRC ProductChangeDescription Astheapplicantofthebelowmodel,[ShenzhenTinnoMobileTechnologyCorp.]declaresthatthe product, Modelname:U655AC isthevariantoftheinitialcertifiedproduct, Modelname:U655AA SOFTWAREMODIFICATIONS:  ProtocolStackchanges:No MMS/STKchanges:No AGPS/SUPLchanges:No  DM/FUMOchanges:No Javachanges:No  Wi-Fichanges:No  Otherchangesdetailed:UIdifference HARDWAREMODIFICATIONS:  Bandchanges:No PowerAmplifierchanges:No  Antennachanges:No  PCBLayoutchanges:No MainRFcomponentschanges:No  Voltagechanges:No FMchanges:No LCD/Speaker/Camera/Vibratorchanges:No Vibratorchanges:No Bluetoothchanges:No  Otherchangesdetailed:No  Wi-Fichanges:No HCI/SWP/TS27 Androidversionchanges:No  NFCchipsetchanges:No Otherchangesdetailed:No MECHANICALMODIFICATIONS: Usenewmetalfront/backcoverorkeypad:No Mechanicalshellchanges:No Otherchangesdetailed:Sidekey/frontframe/batterycover/FPsensorhavedifferencecolor, therearedifferentbrandsilkonthebatterycover. ACCESSORYMODIFICATIONS:  Batterychanges:No ACAdaptorchanges:No  Earphonechanges:No Otherchangesdetailed:No APPROVEDBY:HongjiangJi Company: ShenzhenTinnoMobileTechnologyCorp. Tel: 0755-86095550 Fax: 0755-86095551 Signature: Date: 2024/6/21

U655AA U655AC

©Copyright. All rights reserved by CTTL. SAR TEST REPORT No. 24T04Z100816-014 For Shenzhen Tinno Mobile Technology Corp. Smart Phone Model Name: U655AA,U655AC FCC ID: XD6U655AA with Hardware Version: V1.0 Software Version: U655AAV01.03_9.10/U655ACV01.02.10 Issued Date: 2024-7-5 Note: The test results in this test report relate only to the devices specified in this report. This report shall not be reproduced except in full without the written approval of CTTL. Test Laboratory: CTTL-Telecommunication Technology Labs, CAICT No. 52, Huayuan North Road, Haidian District, Beijing, P. R. China 100191. Tel:+86(0)10-62304633-2512, Fax:+86(0)10-62304633-2504 Email: [email protected], website: www.caict.ac.cn No. 24T04Z100816-014 ©Copyright. All rights reserved by CTTL. Page 2 of 149 REPORT HISTORY Report Number Revision Issue Date Description 24T04Z100816-014 Rev.0 2024-7-5 Initial creation of test report No. 24T04Z100816-014 ©Copyright. All rights reserved by CTTL. Page 3 of 149 TABLE OF CONTENT 1 TEST LABORATORY ................................................................................................................. 5 1.1. INTRODUCTION & ACCREDITATION ................................................................................ 5 1.2. TESTING LOCATION .......................................................................................................... 5 1.3. TESTING ENVIRONMENT .................................................................................................. 5 1.4. PROJECT DATA ................................................................................................................. 5 1.5. SIGNATURE ........................................................................................................................ 5 2 STATEMENT OF COMPLIANCE ................................................................................................ 6 3 CLIENT INFORMATION.............................................................................................................. 8 3.1 APPLICANT INFORMATION .............................................................................................................................. 8 3.2 MANUFACTURER INFORMATION ..................................................................................................................... 8 4 EQUIPMENT UNDER TEST (EUT) AND ANCILLARY EQUIPMENT (AE) ................................ 9 4.1 ABOUT EUT ................................................................................................................................................... 9 4.2 INTERNAL IDENTIFICATION OF EUT USED DURING THE TEST ........................................................................ 10 4.3 INTERNAL IDENTIFICATION OF AE USED DURING THE TEST .......................................................................... 10 5 TEST METHODOLOGY ............................................................................................................ 11 5.1 APPLICABLE LIMIT REGULATIONS ................................................................................................................ 11 5.2 APPLICABLE MEASUREMENT STANDARDS ................................................................................................... 11 6 SPECIFIC ABSORPTION RATE (SAR) .................................................................................... 12 6.1 INTRODUCTION ............................................................................................................................................. 12 6.2 SAR DEFINITION .......................................................................................................................................... 12 7 TISSUE SIMULATING LIQUIDS ............................................................................................... 13 7.1 TARGETS FOR TISSUE SIMULATING LIQUID .................................................................................................... 13 7.2 DIELECTRIC PERFORMANCE ......................................................................................................................... 13 8 SYSTEM VERIFICATION .......................................................................................................... 15 8.1 SYSTEM SETUP ............................................................................................................................................. 15 8.2 SYSTEM VERIFICATION ................................................................................................................................. 16 9 MEASUREMENT PROCEDURES ............................................................................................ 17 9.1 TESTS TO BE PERFORMED ............................................................................................................................. 17 9.2 GENERAL MEASUREMENT PROCEDURE ........................................................................................................ 19 9.3 WCDMA MEASUREMENT PROCEDURES FOR SAR ...................................................................................... 20 9.4 SAR MEASUREMENT FOR LTE ..................................................................................................................... 21 9.5 BLUETOOTH & WI-FI MEASUREMENT PROCEDURES FOR SAR .................................................................... 23 9.6 POWER DRIFT ............................................................................................................................................... 23 10 AREA SCAN BASED 1-G SAR .............................................................................................. 24 No. 24T04Z100816-014 ©Copyright. All rights reserved by CTTL. Page 4 of 149 10.1 REQUIREMENT OF KDB .............................................................................................................................. 24 10.2 FAST SAR ALGORITHMS ....................…

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ANNEX A Graph Results WCDMA 1900 ANT1 Head Exposure Conditions Phantom Section, TSL Position, Test Distance [mm] Band Duty Cycle Frequency [MHz], Channel Number Conversion Factor TSL Conductivity [S/m] TSL Permittivity RightHead, HSL CHEEK, 0.00 Band 2 1:1 1880.000, 9400 7.5 1.379 40.212 Hardware Setup Phantom TSL, Measured Date Probe, Calibration Date DAE, Calibration Date Twin-SAM V8.0 (30deg probe tilt) - 2114 HBBL-600-10000 EX3DV4 – SN7825, 2023-09-27 DAE4 Sn1744, 2023-08-30 Scan Setup Area Scan Zoom Scan Grid Extents [mm] 120.0 x 210.0 30.0 x 30.0 x 30.0 Grid Steps [mm] 15.0 x 15.0 6.0 x 6.0 x 1.5 Sensor Surface [mm] 3.0 1.4 Graded Grid N/A Yes Grading Ratio N/A 1.5 MAIA Y N/A Surface Detection VMS + 6p VMS + 6p Scan Method Measured Measured Measurement Results Area Scan Zoom Scan Date 2024-06-04 2024-06-04 psSAR1g [W/kg] 0.138 0.141 psSAR10g [W/kg] 0.080 0.092 Power Drift [dB] -0.08 -0.04 Power Scaling Disabled Disabled Scaling Factor [dB] TSL Correction No correction No correction M2/M1 [%] 91.8 Dist 3dB Peak [mm] 11.6 . WCDMA 1900 ANT1 Body 10mm Exposure Conditions Phantom Section, TSL Position, Test Distance [mm] Band Duty Cycle Frequency [MHz], Channel Number Conversion Factor TSL Conductivity [S/m] TSL Permittivity Flat, HSL EDGE BOTTOM, 10.00 Band 2 1:1 1852.400, 9262 7.5 1.359 40.239 Hardware Setup Phantom TSL, Measured Date Probe, Calibration Date DAE, Calibration Date Twin-SAM V8.0 (30deg probe tilt) - 2114 HBBL-600-10000 EX3DV4 – SN7825, 2023-09-27 DAE4 Sn1744, 2023-08-30 Scan Setup Area Scan Zoom Scan Grid Extents [mm] 48.0 x 120.0 30.0 x 30.0 x 30.0 Grid Steps [mm] 8.0 x 15.0 6.0 x 6.0 x 1.5 Sensor Surface [mm] 3.0 1.4 Graded Grid N/A Yes Grading Ratio N/A 1.5 MAIA N/A N/A Surface Detection All points All points Scan Method Measured Measured Measurement Results Area Scan Zoom Scan Date 2024-06-04 2024-06-04 psSAR1g [W/kg] 0.991 1.01 psSAR10g [W/kg] 0.537 0.551 Power Drift [dB] 0.01 0.01 Power Scaling Disabled Disabled Scaling Factor [dB] TSL Correction No correction No correction M2/M1 [%] 82.8 Dist 3dB Peak [mm] 10.9 . WCDMA 1900 ANT1 Body 15mm Exposure Conditions Phantom Section, TSL Position, Test Distance [mm] Band Duty Cycle Frequency [MHz], Channel Number Conversion Factor TSL Conductivity [S/m] TSL Permittivity Flat, HSL BACK, 15.00 Band 2 1:1 1852.400, 9262 7.5 1.359 40.239 Hardware Setup Phantom TSL, Measured Date Probe, Calibration Date DAE, Calibration Date Twin-SAM V8.0 (30deg probe tilt) - 2114 HBBL-600-10000 EX3DV4 – SN7825, 2023-09-27 DAE4 Sn1744, 2023-08-30 Scan Setup Area Scan Zoom Scan Grid Extents [mm] 120.0 x 210.0 30.0 x 30.0 x 30.0 Grid Steps [mm] 15.0 x 15.0 6.0 x 6.0 x 1.5 Sensor Surface [mm] 3.0 1.4 Graded Grid N/A Yes Grading Ratio N/A 1.5 MAIA N/A N/A Surface Detection All points All points Scan Method Measured Measured Measurement Results Area Scan Zoom Scan Date 2024-06-04 2024-06-04 psSAR1g [W/kg] 0.450 0.473 psSAR10g [W/kg] 0.261 0.280 Power Drift [dB] 0.11 0.11 Power Scaling Disabled Disabled Scaling Factor [dB] TSL Correction No correction No correction M2/M1 [%] 83.4 Dist 3dB Peak [mm] 13.3 . WCDMA 1700 ANT1 Head Exposure Conditions Phantom Section, TSL Position, Test Distance [mm] Band Duty Cycle Frequency [MHz], Channel Number Conversion Factor TSL Conductivity [S/m] TSL Permittivity RightHead, HSL CHEEK, 0.00 Band 4 1:1 1752.600, 1513 7.8 1.345 40.267 Hardware Setup Phantom TSL, Measured Date Probe, Calibration Date DAE, Calibration Date Twin-SAM V8.0 (30deg probe tilt) -2114 HBBL-600-10000 EX3DV4 – SN7825, 2023-09-27 DAE4 Sn1744, 2023-08-30 Scan Setup Area Scan Zoom Scan Grid Extents [mm] 120.0 x 210.0 30.0 x 30.0 x 30.0 Grid Steps [mm] 15.0 x 15.0 6.0 x 6.0 x 1.5 Sensor Surface [mm] 3.0 1.4 Graded Grid N/A Yes Grading Ratio N/A 1.5 MAIA Y Y Surface Detection Unknown method VMS + 6p Scan Method Measured Measured Measurement Results Area Scan Zoom Scan Date 2024-05-28 2024-05-28 psSAR1g [W/kg] 0.114 0.122 psSAR10g [W/kg] 0.067 0.080 Power Drift [dB] -0.090.08 Power Scaling Disabled Disabled Scaling Factor [dB] TSL Correction No correction No correction M2/M1 [%] 91.1 Dist 3dB Peak [mm] 12.1 . WCDMA 1700 ANT1 Body 10mm Exposure Conditions Phantom Section, TSL Position, Test Distance [mm] Band Duty Cycle Frequency [MHz], Channel Number Conversion Factor TSL Conductivity [S/m] TSL Permittivity Flat, HSL EDGE BOTTOM, 10.00 Band 4 1:1 1712.400, 1312 7.8 1.323 40.343 Hardware Setup Phantom TSL, Measured Date Probe, Calibration Date DAE, Calibration Date Twin-SAM V8.0 (30deg probe tilt) -2114 HBBL-600-10000 EX3DV4 – SN7825, 2023-09-27 DAE4 Sn1744, 2023-08-30 Scan Setup Area Scan Zoom Scan Grid Extents [mm] 48.0 x 120.0 30.0 x 30.0 x 30.0 Grid Steps [mm] 8.0 x 15.0 6.0 x 6.0 x 1.5 Sensor Surface [mm] 3.0 1.4 Graded Grid N/A Yes Grading Ratio N/A 1.5 MAIA N/A N/A Surface Detection VMS + 6p VMS + 6p Scan Method Measured Measured Measurement Results Area Scan Zoom Scan Date 2024-05-28 2024-05-28 psSAR1g [W/kg] 0.975 0.991 psSAR10g [W/kg] 0.534 0.546 Power Drift [dB] 0.02 0.01 Power Scaling Disabled Disabled Scaling Factor [dB] TSL Correction No correction No correction M2/M1 [%] 82.1 Dist 3dB Peak [mm] 9.7 . WCDMA 1700 ANT1 Body 15mm Exposure Conditions Phantom Section, TSL Position, Test Distance [mm] Band Duty Cycle Frequency [MHz], Channel Number Conversion Factor TSL Conductivity [S/m] TSL Permittivity Flat, HSL BACK, 15.00 Band 4 1:1 1712.400, 1312 7.8 1.323 40.343 Hardware Setup Phantom TSL, Measured Date Probe, Calibration Date DAE, Calibration Date Twin-SAM V8.0 (30deg probe tilt) - 2114 HBBL-600-10000 EX3DV4 – SN7825, 2023-09-27 DAE4 Sn1744, 2023-08-30 Scan Setup Area Scan Zoom Scan Grid Extents [mm] 120.0 x 210.0 30.0 x 30.0 x 30.0 Grid Steps [mm] 15.0 x 15.0 6.0 x 6.0 x 1.5 Sensor Surface [mm] 3.0 1.4 Graded Grid N/A Yes Grading Ratio N/A 1.5 MAIA N/A N/A Surface Detection All points All points Scan Method Measured Measured Measurement Results Area Scan Zoom Scan Date 2024-05-28 2024-05-28 psSAR1g [W/kg] 0.819 0.864 psSAR10g [W/kg] 0…

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©Copyright. All rights reserved by CTTL. ANNEX G Probe Calibration Certificate Probe 7825 Calibration Certificate ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL.

©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL.

©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ANNEX H Dipole Calibration Certificate 750 MHz Dipole Calibration Certificate ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. 835 MHz Dipole Calibration Certificate ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. 1800 MHz Dipole Calibration Certificate ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. 1900 MHz Dipole Calibration Certificate

©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. 2300 MHz Dipole Calibration Certificate ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. 2450 MHz Dipole Calibration Certificate ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. 2600 MHz Dipole Calibration Certificate ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL.

©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. 3500 MHz Dipole Calibration Certificate ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. 3700 MHz Dipole Calibration Certificate ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. 3900 MHz Dipole Calibration Certificate ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL.

©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. 5 GHz Dipole Calibration Certificate ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL. ©Copyright. All rights reserved by CTTL.

©Copyright. All rights reserved by CTTL. FCC PART 15C TEST REPORT No. 24T04Z100816-021 for Shenzhen Tinno Mobile Technology Corp. Smart Phone Model Name: U655AA,U655AC FCC ID: XD6U655AA with Hardware Version: V1.0 Software Version: U655AAV01.04.10/U655ACV01.02.10 Issued Date: 2024-7-6 Note: The test results in this test report relate only to the devices specified in this report.This report shall not be reproduced except in full without the written approval of CTTL. Test Laboratory: CTTL, Telecommunication Technology Labs, CAICT No.52, HuayuanNorth Road, Haidian District, Beijing, P. R. China 100191. Tel:+86(0)10-62304633-2512,Fax:+86(0)10-62304633-2504 Email:[email protected], website: www.chinattl.com No. 24T04Z100816-021 ©Copyright. All rights reserved by CTTL. Page 2 of 91. REPORT HISTORY Report Number Revision Description Issue Date 24T04Z100816-021 Rev.0 1 st edition 2024-7-6 Note: the latest revision of the test report supersedes all previous version. No. 24T04Z100816-021 ©Copyright. All rights reserved by CTTL. Page 3 of 91. CONTENTS 1. TEST LABORATORY ......................................................................................................................... 5 1.1. INTRODUCTION &ACCREDITATION .................................................................................................. 5 1.2. TESTING LOCATION ......................................................................................................................... 5 1.3. TESTING ENVIRONMENT .................................................................................................................. 6 1.4. PROJECT DATA ................................................................................................................................. 6 1.5. SIGNATURE ...................................................................................................................................... 6 2. CLIENT INFORMATION ................................................................................................................... 7 2.1. APPLICANT INFORMATION ............................................................................................................... 7 2.2. MANUFACTURER INFORMATION ...................................................................................................... 7 3. EQUIPMENT UNDER TEST (EUT) AND ANCILLARY EQUIPMENT (AE) ............................. 8 3.1. ABOUT EUT .................................................................................................................................... 8 3.2. INTERNAL IDENTIFICATION OF EUT ................................................................................................ 8 3.3. INTERNAL IDENTIFICATION OF AE ................................................................................................... 8 3.4. NORMAL ACCESSORY SETTING ........................................................................................................ 8 3.5. GENERAL DESCRIPTION ................................................................................................................... 8 4. REFERENCE DOCUMENTS ............................................................................................................. 9 4.1. DOCUMENTS SUPPLIED BY APPLICANT ............................................................................................ 9 4.2. REFERENCE DOCUMENTS FOR TESTING ........................................................................................... 9 5. TEST RESULTS ................................................................................................................................. 10 5.1. SUMMARY OF TEST RESULTS ......................................................................................................... 10 5.2. STATEMENTS .................................................................................................................................. 10 6. TEST FACILITIES UTILIZED ......................................................................................................... 11 7. MEASUREMENT UNCERTAINTY ................................................................................................ 12 7.1. PEAK OUTPUT POWER - CONDUCTED ...............................................................…

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