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Welcome, ladies and gentlemen.
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Apple has stunned the tech world once again. A mere 7 months after the announcement of the iPad 3, the iPad 4 was introduced on October 23, 2012.
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Tech Specs:
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Dual-core A6X processor with quad-core GPU
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9.7 inch LCD, backlit in-plane switching LED with 2048×1536 pixel Retina display
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16, 32, or 64 GB flash memory (at launch)
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5 MP rear-facing camera
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Lightning connector
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Continuing the trend, this iPad is glued shut. This isn't our first adhesive-riddled iPad, and we've been working to figure out how to make the painful opening process a lot easier.
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Our heated-up iOpener lets us apply heat just where it's needed, softening the troublesome adhesive. Once we've snuck a few guitar picks in the seam, we're nearly home-free.
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As opposed to the Samsung display we found in the iPad 3, the new iPad LCD is manufactured by LG.
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Apple has reportedly been working to move away from Samsung as a primary supplier, so this LG display is not surprising. However, Apple often relies on multiple suppliers for a single component, meaning there are quite likely other LCD manufacturers lurking inside other iPad 4s.
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We lift up the LCD to reveal the battery.
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The battery is labeled with the same model number (A1389) as in the last round, so it's no surprise that it's another 3.7 V, 43 Whr package.
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Like the iPad 3, the battery is adhered very securely to the rear case. Since batteries are consumables that wear out, the trend of glued-in, hard-to-access batteries in iPads and other Apple devices is unfortunate.
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Skipping ahead to the good stuff, we get a quick look at the biggest improvement in the iPad 4—the A6X and its supporting hardware:
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Apple A6X Processor
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SK Hynix H2JTDG8UD2MBR 16 GB NAND Flash
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Apple 338S1116 Cirrus Logic Audio Codec
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343S0622-A1 Dialog Semi PMIC
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Apple 338S1077 Cirrus Logic Class D Audio Amplifier
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QVP TI 261 A9P2 Boost Converter (likely)
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The backside of the board, however, boasts no dramatic improvements:
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Broadcom BCM5974 Touch Screen Controller
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Broadcom BCM5973A1 Touch Screen Controller
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Texas Instruments CD3240B0 Touch Screen Line Driver
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2 x 4Gb Elpida LP DDR2 = 1 GB DRAM in separate packages in a 64-bit configuration
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2 x Fairchild BCHAH/FDMC Voltage Regulator / Reference
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Murata 339S0171 Broadcom BCM4334 WiFi Module
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If you're new to our site, we'll let you in on a little secret: we love our 54 Bit Driver Kit. It makes quick work freeing the Lightning connector, even with a couple of hard to find screws.
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There is a bit of adhesive holding the connector in, but nothing compared to some adhered components we've seen before.
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Repair techs, DIY-ers, and clumsy iPad-users, rejoice! The Lightning connector is on its very own ribbon cable, meaning that procuring a replacement connector should be fairly inexpensive.
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Despite looking almost identical in this shot, we do spot one more difference between the 3rd (top) and 4th (bottom) generations: the front-facing camera!
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We've got a 1.2MP FaceTime HD camera, with the ability to shoot 720p HD video. That's a big improvement from the .3MP FaceTime camera in the iPad 3.
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Compared to the iPad 3, this camera is actually slightly thicker (an extra .4 mm), but it still manages to fit into the same space.
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iPad 4 Repairability Score: 2 out of 10 (10 is easiest to repair)
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The LCD is easy to remove once the front panel is gone.
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The battery is not soldered to the logic board, making the replacement process a tad less difficult.
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Just like in the iPad 2 & 3, the front panel is glued to the rest of the device, greatly increasing the chances of cracking the glass when trying to remove it.
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Gobs, gobs, and gobs of adhesive hold everything in place, including the prone-to-start-a-fire-if-punctured battery.
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The LCD has foam sticky tape adhering it to the front panel, increasing chances of it being shattered during disassembly.
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You can't access the front panel's connector until you remove the LCD.
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14 件のコメント
Be careful with the home button flex!
I know! I tore mine. Does anyone know where to get a replacement?
can the home button flex be torn taking the glass out or is it if your trying to remove the flex it's self.
keith -
I assume also from because they dont comment on the glass that it is the same as the ipad 3 glass?
keith -