iPhone 5拆解.docx
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iPhone 5拆解.docx
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iPhone5拆解
Step1 — iPhone5Teardown
∙ThedawnofanotherdayintheLandDownUnderbringsuswhatwe'veallbeenwaitingfor:
thenewiPhone5!
∙Abigthanksto MacFixitAustralia forlettingususetheirdigsinMelbourneforthisteardown.TheystockMacandiPhoneupgrades/accessories,andalsocarryour iFixittoolkits.
Step2
∙TheiPhone5ishere,anditbroughtalongthebigguns.
o4"1136x640pixel(326ppi)Retinadisplay
oAppleA6systemonachip(SoC)
o8megapixeliSightcamera
o8-pinLightningconnector
o4GLTEconnectivity
oiOS6
Step3
∙Therewon'tbeanymistakinganiPhone5foraniPhone4or4S.AlothaschangedontheoutsideoftheiPhone.
∙Themostobviousalterationtothebottomofthephoneistheexchangeofthelarge30-pindockconnectorforthediminutiveLightningconnector.
∙TheheadphonejackisnowonthebottomoftheiPhone,rightnexttotheupdated microphonegrille—aseriesofholesratherthanamesh-coveredslot.
∙Othernotabledifferencesaretheslatebezel,asopposedtothe stainlesssteel thatwrappedaroundthe4S,andthechamferededgesbetweenthebezelandthefront/rearcases.
Step4
∙Peskypentalobescrews!
Goodthingour 5-PointDrivers stillworkonthem.
oIt'sincrediblyconvenientthatAppleusedthesamepentalobescrewheadthatthey'vebeenusingforthepasttwoyearsontheiPhone4and4S.Thescrewshaftsareslightlydifferentfromthescrewsinour iPhone4/4SLiberationKit,sowemadeanew iPhone5LiberationKit!
∙Theunibodybackcaseisreminiscentofthe iPhone3GS,whilestillretainingthesquare(thoughnowchamfered)edgesoftheiPhone4.
Step5
∙What'sthis?
Asuctioncup?
Wehaven'tneededasuctioncuptogetintoaniPhonesincethe 3GS!
∙BecausetheiPhone5isopenedfront-to-back,replacingacrackedscreenisgoingtobeeasierthanever. Thankyou,Apple!
oComparethistotheiPhone4S,whereittook 38steps toisolatethedisplayassembly,andthisiPhonemaybethemostrepairableiPhonewe'veseeninawhile.
Step6
∙ThedisplayconnectorisheldfirmlytothelogicboardbyafewsimplePhillipsscrews.
∙Ourspudgermakesquickworkofpryingupthedisplayconnector,and poof!
thedisplayisfree.
∙We'rehaving iPhone3GS flashbackswiththeeasilyaccessibledisplayassembly.
∙Screencrackersandscreenfixersrejoice!
Step7
∙TheiPhone5ditchesitslidtoshowusallofthejuicybitsinside.
∙So,whatcanweseefromhere?
Abiggerbattery?
Antennaconnections?
Asinglespeaker?
Cameras?
Vibrators?
Homebuttons?
oNeverfear,ourfaithfuliPhonedelivers;we'llbesuretotakeacloserlookateachofthesecomponentsasweremovethem.
Step8
∙Asalways,wedisconnectthebatteryfirsttopreventelectrifyinganything,includingourselves,aswedigdeeper.
∙ThreePhillips#00screwsandametalbracketholdthebatteryconnectortothelogicboard.
oHmm,thisisbeginningtofeel veryfamiliar.
∙Inthe3GS,thedisplayassemblywaseasytotakeout,butthebatterywasapain.Inthe4and4S,thedisplayassemblytook38stepstoremove,whilethebatterywasabreeze.WeliketothinkthatApplehasstartedtailoringtoourpreferencesinallowingustoremoveboththedisplayassemblyand thebatteryinonlyacoupleofsteps.
Step9
∙WeusetheBatteryremovaltabtopullupthebattery.Nevertrytoprysoftpackbatteriesasthiscouldleadtoathermalevent!
∙FortheiPhone5,Applehasswitchedtoadifferentbatterychemistry,withahighervoltageandslightlylargercapacitythantheiPhone4S.Let'sseehowthebatteryspecsstackup.
oiPhone5Battery:
3.8V-5.45Wh-1440mAh.Talktime:
Upto8hourson3G.Standbytime:
Upto225hours.
oiPhone4SBattery:
3.7V-5.3Wh-1432mAh.Talktime:
Upto8hourson3G.Standbytime:
Upto200hours.
oSamsungGalaxySIIIBattery:
3.8V-7.98Wh-2100mAh.Talktime:
Upto11hours40minuteson3G.Standbytime:
Upto790hours.
∙Onthebackofthebatterywenotice"MFRSony,"and"CellmadeinSingapore."Abitof googling anditlooksverylikelythatSonyismanufacturingthisbattery.
Step10
∙Thereareallkindsofmetal-to-metalcontactsinsidetheiPhone5.
oSpringcontactsmakeforeasyrepairs,butmandatecarefulattentiontocleaningallthepartsbeforereassembly.Fingeroilscangetinthewayofthesemetalcontactsandcausefrustratingcomponentfailures.
∙Thiscontactconnectsthemetalframearoundthefront-facingcameratotheframearoundtherear-facingcamera.Maybethisframeissomekindofanantenna?
Onlytimewilltell.
∙Speakingofantennas,aspudgereasilypriesoneendofanantennaconnectoroffofthelogicboardnearthebattery.
oIntheiPhone4S,thisantennalocationwasreservedforthecellularantenna.Wewon'tknowforsurewhatthisantenna'spurposeisuntilweuncovermore.
Step11
∙Nearthetopofthecase,wefindafewantennaconnectorsfirmlyscrewedtotheinsideofthecase.
∙Finallyfreeofitsconstraints,weliftthelogicboardupoutoftherearcase.
∙Thelogicboardand8megapixeliSightcameracomeouttogether,leavingseveralcomponentsbehindintherearcase—anotherwinformodularity.
o+1 forrepairability.
Step12
∙They (productplacementengineers)saidifustechwritersweregoodandwestayedlate,wecanhaveonebeverageofchoicewhenwefinishedtheteardown.
∙Then they promptlytookthebeveragesaway…
∙…andputtheminthefridge!
!
!
∙WeЯhappycamperz.
Step13
∙Manyofthecomponentsthatcameoutwiththelogicboardareheldinplacewithscrewsandbrackets.
oApparently,Appleisveryconcernedwithmakingsurethatalltheconnectorsarefirmlyseatedandwon'trattlelooseovertime.Goodonyou,Apple.
∙Beforewegoanyfurther:
AmegathankstoChipworks forstickingaroundintotheweehoursofthenightandhelpingusidentifythepackagesonthelogicboard.Theirhandiwork(alongwithours!
)canbeseenbelow.
Step14
∙Theundersideofthelogicboardisteemingwithcomponents.
oSkyworks77352-15GSM/GPRS/EDGEpoweramplifiermodule
oSWUA147228isanRFantennaswitchmodule
oTriquint666083-1229WCDMA/HSUPApoweramplifier/duplexermodulefortheUMTSband
oAvagoAFEM-7813dual-bandLTEB1/B3PA+FBARduplexermodule
oSkyworks77491-158CDMApoweramplifiermodule
oAvagoA5613ACPM-5613LTEband13poweramplifier
Step15
∙Morechipsontheundersideofthelogicboard:
oQualcommPM8018RFpowermanagementIC
oHynixH2JTDG2MBR128Gb(16GB)NANDflash
oApple338S1131dialogpowermanagementIC*
oApple338S1117CirrusLogicClassDAmplifiers.ThedieinsideisaCirrusLogicdevice(secondimage)butitdoesnotlookliketheaudiocodec.
oSTMicroelectronicsL3G4200D(AGD5/2235/G8SBI)low-powerthree-axisgyroscope—sameasseenintheiPhone4S,iPad2,andotherleadingsmartphones
oMurata339S0171(basedonBroadcomBCM4334)Wi-Fimodule
Step16
∙Nowfortheplatderésistance:
theA6applicationprocessor.
∙TheA6processoristhefirstApple System-on-Chip(SoC) touseacustomdesign,basedofftheARMv7instructionset.
∙BecausetheA6isnotan ARM-specificCPUdesign,thisgivesAppletheabilitytotailortheA6towardstheirneeds.
∙AccordingtoChipworks,theB8164B3PMsilkscreenlabeldenotes1GB Elpida LPDDR2SDRAM.
oContrarily,the infographic presentedduringApple'sKeynoteclearlyshowed Samsung RAM(K3PE7E700F)intheA6.
oNottoolongago,Appledecidedto reducethenumberofRAMchiporders fromSamsung.TimetoinvestinElpida?
OrisSamsunglurkinginthenextphoneontheshelf?
That'sforyoutodecide.
Step17
∙Didsomeoneaskforaclose-upoftheApple338S1077Cirrusaudiocodec?
∙Whatexactlydoesanaudiocodecdo?
Inshort,it'sasingledevicethatactsasbothadigital-to-analogandanalog-to-digitalconvertertoproperlyencodeanddecodeaudioinandoutsignals.
Step18
∙Chipsonaboard.Kindalikeantsonalog.
oSTMicroelectronicsLIS331DLH(2233/DSH/GFGHA)ultralow-power,highperformance,three-axislinearaccelerometer
oTexasInstruments27C245ItouchscreenSoC
oBroadcomBCM5976touchscreencontroller
▪Ratherthanasingletouchscreencontroller,Applewentwithamulti-chipsolutiontohandlethelargerscreensize,àlaiPad.
oAppleA6applicationprocessor
oQualcommMDM9615MLTEmodem
oQualcommRTR8600Multi-band/modeRFtransceiver,thesameonefoundintheSamsungGalaxySIII
Step19
∙AniPhonewith4Gconnectivity?
It'smorelikelythanyouthink.
∙WecannowconfirmthattheQualcommMDM9615Misthe4G LTE modempoweringthisnewfeature.
oAfterbeingteasedforoverayearbyAndroidbullies,theiPhonefaithfulfinallyhave4GLTEontheirside.Whatwilltheydowiththisnewfoundpower?
Onlytimewilltell.
∙TheQualcommMDM9615Misa28nmLTE(FDDand TDD),HSPA+,EV-DORevB, TD-SCDMAmodem.
∙TheMDM9615allowsfor multi-spectrums,multi-mode LTEsupport.ItisresponsiblefortransmittingsimultaneousvoiceanddatatransferonLTE(providedthecarrierhastheinfrastructuretoallowsimultaneousvoiceanddatatransfer.)
∙WealsofindtheQualcommRTR8600multi-band/modeRFtransceiver.TheRTR8600ispairedalongsidetheMDM9615tosupportvariousbands,including5 UMTS bands,andover5LTEand4EDGEbands.
Step20
∙Here'sacloserlookattheBroadcomBCM5976trackpadcontroller.
∙AppleusedthissamechipintheMacBookAirtocontrolthetrackpad.Here,it'sworkingtogetherwiththeTexasInstrumentstouchscreencontrollertotakecareoftouchinputsontheRetinadisplay.
Step21
∙Aftercompletelydissectingthelogicboard,weturnourattentionbacktotherearcase.
∙Notevenahealthyheapofad
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