WirelessCarPlayTroubleshootingReport
 I.FailureTypesandCauseAnalysis
 (A)ConnectionFailures
 1. BluetoothandWi-Fi Issues:WirelessCarPlayreliesonBluetoothfor initialpairingand
 Wi-Fi for data transmission. If BluetoothorWi-Fi functions arenot enabled, or the
 Bluetoothconnectionbetweenthephoneandthe in-vehiclesystemisunstable, the
 connectionwill fail. Forexample, inareaswithstrongsignal interference, suchasnear
 large shopping malls, the electromagnetic interference generated by numerous
 electronicdevicesworkingsimultaneouslymayaffectthetransmissionofBluetoothand
 Wi-Fisignals,makingWirelessCarPlayunabletoconnectnormally.
 2. DeviceCompatibility: Not all vehiclemodels and iPhonemodelsperfectly support
 WirelessCarPlay.Someoldervehiclemodelsmayhavein-vehiclesystemsthathavenot
 beenadaptedandupdated,makingthemincompatiblewiththelatest iPhonesystems,
 thuscausingconnectionproblems. Inaddition, even if thevehiclemodel andphone
 supportWirelessCarPlay, thesubtledifferencesbetweendifferentbrandsandmodels
 maystill leadtocompatibilityfailures.
 3. Software Issues:Whether it is the iOSsystemof the iPhoneor thesoftwareof the
 in-vehicleinfotainmentsystem, if theyarenotupdatedtothelatestversioninatimely
 manner, potential software vulnerabilities or incompatibility issuesmay affect the
 connectionofWirelessCarPlay. For instance, afterupdatingcertain iOSversions, the
 communicationprotocolwithspecific in-vehiclesystemsmaychange. If the in-vehicle
 systemisnotupdatedsynchronously,theconnectionwillfail.
 (B)AudioFailures
 1. IncorrectAudioOutputSettings:AfterconnectingtoWirelessCarPlay,usersmaynot
 correctlysettheaudiooutputsource,resultinginnosoundfromthein-vehiclespeakers.
 Theaudiosettingsofsomevehiclemodelsarerelativelycomplex,withmultipleaudio
 outputoptions,suchasBluetoothaudio, in-vehicleCDaudio,USBaudio,etc. Ifusersdo
 notswitchtheaudiooutput totheoptioncorrespondingtoWirelessCarPlay, theywill
 nothearthesound.
 2. ChannelBalanceIssues:Sometimes, improperaudiochannelbalancesettingswillcause
 thesoundtoonlycomefromonesideofthespeakerorthevolumetobetoolow.For
 example,whenadjustingthevolume,usersmayaccidentallychangethechannelbalance,
 makingthevolumeof the leftandright channels inconsistent, affectingthe listening
 experience.
3. AudioCodec Incompatibility: Differentmusic applicationsmayusedifferent audio
 codecformats, andthein-vehiclesystemmaynotsupportcertaincodecformatswell,
 resultinginabnormalaudioplayback, suchas卡顿(stuttering)ornoise.Forexample,
 somenichemusic applicationsmay use special audio coding, which the in-vehicle
 systemcannotdecodesmoothly,thusaffectingtheaudioplaybackquality.
 (C)DisplayFailures
 1. ResolutionMismatch:Thescreenresolutionof theiPhoneis inconsistentwiththatof
 thein-vehicledisplay,whichmay leadtoabnormaldisplay, suchaspicturestretching,
 blurring,orpartialcontentnotbeingdisplayedcompletely.Thisproblemismoreobvious
 whensome iPhoneswithhigh-resolutionscreensareconnectedtoin-vehicledisplays
 withlowresolution.
 2. Incorrect Display Settings: Theremay be parameters incompatiblewithWireless
 CarPlayinthedisplaysettingsofthein-vehiclesystem,suchasimproperlysetbrightness,
 contrast, colormode, etc., whichwill affect thedisplay effect. For example, if the
 brightnessissettoolow,thecontentonthein-vehicledisplaywillbedifficulttoseeina
 strongsunlightenvironment.
 3. SoftwareConflicts: Someapplications installedonthe iPhonemayconflictwiththe
 display functionofWirelessCarPlay, causingproblems suchas flower screens, black
 screens,or flickeringonthescreen. Forexample, somegameapplicationswithspecial
 displayeffectsmayinterferewiththenormaldisplayofWirelessCarPlaywhenrunningin
 thebackground.
 II.TroubleshootingMethods
 (A)TroubleshootingforConnectionFailures
 1. RebootDevices:OperateintheorderofrebootingtheiPhonefirstandthenthevehicle.
 When rebootingthe iPhone, long-press thepower buttonuntil theshutdownslider
 appears, slidetoshutdown,wait for a fewseconds, andthen long-press thepower
 buttontoturniton.Whenrebootingthevehicle, turnoffthevehicle,waitforat least1
 minute,andthenstartitagain.Thiscancleartemporaryerrordatainthedevicememory
 andre-initializetheBluetoothandWi-Ficonnections.
 2. CheckBluetoothandWi-FiSettings: Inthe"Settings"oftheiPhone,ensurethatboth
 BluetoothandWi-Fi areturnedon. Enter theBluetoothsettingspagetocheck if the
 in-vehicleBluetoothdevicehasbeensuccessfullyconnected.Ifnot,clickthedevicename
 toconnect.Atthesametime,checktheWi-Fisettingstoconfirmthat it isconnectedto
thein-vehicleWi-Fihotspot(ifany). Iftheconnectionisabnormal,youcantryto"forget
 thisnetwork"andthensearchforandconnectagain.
 3. UpdateSoftware:TimelyupdatetheiOSsystemoftheiPhonetothelatestversion. In
 the"Settings"oftheiPhone,click"General"-"SoftwareUpdate"andfollowtheprompts
 toupdate.Forthein-vehicleinfotainmentsystem,refertothevehicleusermanualtofind
 theupdatemethod.Usually, youcandownloadtheupdatepackagefromtheofficial
 websiteofthevehiclemanufacturerandthenupdatethesystemthroughaUSBstorage
 deviceoronlineupdate.
 4. ConfirmCompatibility: Check theofficial documentsof thevehiclemanufacturer to
 confirmwhether thevehicle supportsWirelessCarPlay and the rangeof supported
 iPhonemodels and iOS versions. If the vehicledoes not supportWirelessCarPlay,
 considerusingawiredconnectionmethod. For iPhones, if theversion is too lowto
 supportWirelessCarPlay,trytoupgradetheiOSsystem; ifupgradingisnotpossible,you
 mayneedtoreplacethedevicewithasupportedone.
 (B)TroubleshootingforAudioFailures
 1. AdjustAudioOutputSettings: Inthe in-vehicle infotainment system, findtheaudio
 settingsmenuandswitchtheaudiooutputsourcetoWirelessCarPlay.Theoperation
 methodsof different vehiclemodelsmayvary slightly. Generally, youcanswitchby
 touchingthescreenorrotatingthecontrolknobintheaudiosourceselectioninterface.
 Afterswitching,checkwhetherthereissoundoutput.
 2. CalibrateChannelBalance: Enter theaudiosettingsof thein-vehiclesystem, findthe
 channelbalanceadjustmentoption,andadjusttheleftandrightchannelbalancetothe
 middleposition. Somevehiclemodelscanbeadjustedbyslidingthebarorentering
 numbers.Afteradjustment,playtheaudiotocheckifthesoundisnormal.
 3. ChangeMusicApplicationorAudioFormat: Ifacertainmusicapplicationhasaudio
 playbackproblems, trytoswitchtoothermusicapplications, suchasswitchingfroma
 third-partymusicapplicationtotheApple-built-inmusicapplication. Iftheproblemstill
 exists, itmaybeanaudiofileformat issue.Youcantrytoplayotherformataudiofiles,
 suchasMP3,AAC,etc.,toseeiftheycanplaynormally.
 (C)TroubleshootingforDisplayFailures
 1. AdjustDisplaySettings: Inthedisplaysettingsof thein-vehiclesystem, trytoadjust
 parameterssuchasbrightness,contrast,andcolormodetooptimizethedisplayeffect.
 Generally,youcanfindthedisplay-relatedoptionsinthesettingsmenuofthein-vehicle
 systemforadjustment. Forexample,appropriatelyincreasethebrightnesstoadapt to
 differentlightenvironments.
2.
 Close Conflicting Applications: On the iPhone, close the application programs that may
 conflict with the display function of Wireless CarPlay. Double-click the Home button (for
 full-screen iPhones, swipe up from the bottom edge of the screen and pause) to bring up
 the background application program interface, and swipe up the application window to
 be closed to close it. After closing all suspicious applications, reconnect to Wireless
 CarPlay to check if the display returns to normal.
 3.
 Check Resolution Settings (if supported): The in-vehicle systems of some high-end
 vehicle models may allow users to manually adjust the display resolution. If the
 resolution difference between the iPhone and the in-vehicle display is large, you can try
 to find the resolution setting option in the in-vehicle system and adjust it to a mode
 similar to or compatible with the iPhone screen resolution. However, it should be noted
 that adjusting the resolution may affect the display effect of other functions of the
 in-vehicle system, so careful consideration is required before operation