iPhone 5拆解.docx

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