1、iPhone 5拆解Step 1iPhone 5 Teardown The dawn of another day in the Land Down Under brings us what weve all been waiting for: the new iPhone 5! A big thanks toMacFixit Australiafor letting us use their digs in Melbourne for this teardown. They stock Mac and iPhone upgrades/accessories, and also carry o
2、uriFixit toolkits.Step 2 The iPhone 5 is here, and it brought along the big guns.o 4 1136x640 pixel (326 ppi) Retina displayo Apple A6 system on a chip (SoC)o 8 megapixel iSight camerao 8-pin Lightning connectoro 4G LTE connectivityo iOS 6Step 3 There wont be any mistaking an iPhone 5 for an iPhone
3、4 or 4S. A lot has changed on the outside of the iPhone. The most obvious alteration to the bottom of the phone is the exchange of the large 30-pin dock connector for the diminutive Lightning connector. The headphone jack is now on the bottom of the iPhone, right next to the updatedmicrophone grille
4、a series of holes rather than a mesh-covered slot. Other notable differences are the slate bezel, as opposed to thestainless steelthat wrapped around the 4S, and the chamfered edges between the bezel and the front/rear cases.Step 4 Pesky pentalobe screws! Good thing our5-Point Driversstill work on t
5、hem.o Its incredibly convenient that Apple used the same pentalobe screwhead that theyve been using for the past two years on the iPhone 4 and 4S. The screw shafts are slightly different from the screws in ouriPhone 4/4S Liberation Kit, so we made a newiPhone 5 Liberation Kit! The unibody back case
6、is reminiscent of theiPhone 3GS, while still retaining the square (though now chamfered) edges of the iPhone 4.Step 5 Whats this? A suction cup? We havent needed a suction cup to get into an iPhone since the3GS! Because the iPhone 5 is opened front-to-back, replacing a cracked screen is going to be
7、easier than ever.Thank you, Apple!o Compare this to the iPhone 4S, where it took38 stepsto isolate the display assembly, and this iPhone may be the most repairable iPhone weve seen in a while.Step 6 The display connector is held firmly to the logic board by a few simple Phillips screws. Our spudger
8、makes quick work of prying up the display connector, andpoof!the display is free. Were havingiPhone 3GSflashbacks with the easily accessible display assembly. Screen crackers and screen fixers rejoice!Step 7 The iPhone 5 ditches its lid to show us all of the juicy bits inside. So, what can we see fr
9、om here? A bigger battery? Antenna connections? A single speaker? Cameras? Vibrators? Home buttons?o Never fear, our faithful iPhone delivers; well be sure to take a closer look at each of these components as we remove them.Step 8 As always, we disconnect the battery first to prevent electrifying an
10、ything, including ourselves, as we dig deeper. Three Phillips #00 screws and a metal bracket hold the battery connector to the logic board.o Hmm, this is beginning to feelvery familiar. In the 3GS, the display assembly was easy to take out, but the battery was a pain. In the 4 and 4S, the display as
11、sembly took 38 steps to remove, while the battery was a breeze. We like to think that Apple has started tailoring to our preferences in allowing us to remove both the display assemblyandthe battery in only a couple of steps.Step 9 We use the Battery removal tab to pull up the battery. Never try to p
12、ry soft pack batteries as this could lead to a thermal event! For the iPhone 5, Apple has switched to a different battery chemistry, with a higher voltage and slightly larger capacity than the iPhone 4S. Lets see how the battery specs stack up.o iPhone 5 Battery:3.8V - 5.45Wh - 1440mAh. Talk time: U
13、p to 8 hours on 3G. Standby time: Up to 225 hours.o iPhone 4S Battery:3.7V - 5.3Wh - 1432mAh. Talk time: Up to 8 hours on 3G. Standby time: Up to 200 hours.o Samsung Galaxy S III Battery:3.8V - 7.98Wh - 2100mAh. Talk time: Up to 11 hours 40 minutes on 3G. Standby time: Up to 790 hours. On the back o
14、f the battery we notice MFR Sony, and Cell made in Singapore. A bit ofgooglingand it looks very likely that Sony is manufacturing this battery.Step 10 There are all kinds of metal-to-metal contacts inside the iPhone 5.o Spring contacts make for easy repairs, but mandate careful attention to cleaning
15、 all the parts before reassembly. Finger oils can get in the way of these metal contacts and cause frustrating component failures. This contact connects the metal frame around the front-facing camera to the frame around the rear-facing camera. Maybe this frame is some kind of an antenna? Only time w
16、ill tell. Speaking of antennas, a spudger easily pries one end of an antenna connector off of the logic board near the battery.o In the iPhone 4S, this antenna location was reserved for the cellular antenna. We wont know for sure what this antennas purpose is until we uncover more.Step 11 Near the t
17、op of the case, we find a few antenna connectors firmly screwed to the inside of the case. Finally free of its constraints, we lift the logic board up out of the rear case. The logic board and 8 megapixel iSight camera come out together, leaving several components behind in the rear caseanother win
18、for modularity.o +1for repairability.Step 12 They(product placement engineers) said if us tech writers were good and we stayed late, we can have one beverage of choice when we finished the teardown. Thentheypromptly took the beverages away and put them in the fridge! We happy camperz.Step 13 Many of
19、 the components that came out with the logic board are held in place with screws and brackets.o Apparently, Apple is very concerned with making sure that all the connectors are firmly seated and wont rattle loose over time. Good on you, Apple. Before we go any further: A mega thanks toChipworksfor s
20、ticking around into the wee hours of the night and helping us identify the packages on the logic board. Their handiwork (along with ours!) can be seen below.Step 14 The underside of the logic board is teeming with components.o Skyworks 77352-15 GSM/GPRS/EDGE power amplifier moduleo SWUA 147 228 is a
21、n RF antenna switch moduleo Triquint 666083-1229 WCDMA / HSUPA power amplifier / duplexer module for the UMTS bando Avago AFEM-7813 dual-band LTE B1/B3 PA+FBAR duplexer moduleo Skyworks 77491-158 CDMA power amplifier moduleo Avago A5613 ACPM-5613 LTE band 13 power amplifierStep 15 More chips on the
22、underside of the logic board:o Qualcomm PM8018 RF power management ICo Hynix H2JTDG2MBR 128 Gb (16 GB) NAND flasho Apple 338S1131 dialog power management IC*o Apple 338S1117 Cirrus Logic Class D Amplifiers. The die inside is a Cirrus Logic device (second image) but it does not look like the audio co
23、dec.o STMicroelectronics L3G4200D (AGD5/2235/G8SBI ) low-power three-axis gyroscopesame as seen in the iPhone 4S, iPad 2, and other leading smart phoneso Murata 339S0171 (based on Broadcom BCM4334) Wi-Fi moduleStep 16 Now for the plat de rsistance: the A6 application processor. The A6 processor is t
24、he first AppleSystem-on-Chip (SoC)to use a custom design, based off the ARMv7 instruction set. Because the A6 is not anARM-specific CPU design, this gives Apple the ability to tailor the A6 towards their needs. According to Chipworks, the B8164B3PM silkscreen label denotes 1GBElpidaLP DDR2 SDRAM.o C
25、ontrarily, theinfographicpresented during Apples Keynote clearly showedSamsungRAM (K3PE7E700F) in the A6.o Not too long ago, Apple decided toreduce the number of RAM chip ordersfrom Samsung. Time to invest in Elpida? Or is Samsung lurking in the next phone on the shelf? Thats for you to decide.Step
26、17 Did someone ask for a close-up of the Apple 338S1077 Cirrus audio codec? What exactly does an audio codec do? In short, its a single device that acts as both a digital-to-analog and analog-to-digital converter to properly encode and decode audio in and out signals.Step 18 Chips on a board. Kinda
27、like ants on a log.o STMicroelectronics LIS331DLH (2233/DSH/GFGHA) ultra low-power, high performance, three-axis linear accelerometero Texas Instruments 27C245I touch screen SoCo Broadcom BCM5976 touchscreen controller Rather than a single touchscreen controller, Apple went with a multi-chip solutio
28、n to handle the larger screen size, la iPad.o Apple A6 application processoro Qualcomm MDM9615M LTE modemo Qualcomm RTR8600 Multi-band/mode RF transceiver, the same one found in theSamsung Galaxy S IIIStep 19 An iPhone with 4G connectivity? Its more likely than you think. We can now confirm that the
29、 Qualcomm MDM9615M is the 4GLTEmodem powering this new feature.o After being teased for over a year by Android bullies, the iPhone faithful finally have 4G LTE on their side. What will they do with this newfound power? Only time will tell. The Qualcomm MDM9615M is a 28 nm LTE (FDDandTDD), HSPA+, EV-
30、DO Rev B,TD-SCDMAmodem. The MDM9615 allows formulti-spectrums, multi-modeLTE support. It is responsible for transmitting simultaneous voice and data transfer on LTE (provided the carrier has the infrastructure to allow simultaneous voice and data transfer.) We also find the Qualcomm RTR8600 multi-ba
31、nd/mode RF transceiver. The RTR8600 is paired alongside the MDM9615 to support various bands, including 5UMTSbands, and over 5 LTE and 4 EDGE bands.Step 20 Heres a closer look at the Broadcom BCM5976 trackpad controller. Apple used this same chip in the MacBook Air to control the trackpad. Here, its working together with the Texas Instruments touchscreen controller to take care of touch inputs on the Retina display.Step 21 After completely dissecting the logic board, we turn our attention back to the rear case. Not even a healthy heap of ad
