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iPhone 4S teardown reveals 512 MB of RAM, more

Credit: iFixit

Apple (s aapl) repair guide site iFixit has already managed to secure an iPhone 4S and pull it apart. Details of what’s inside reveal a design that’s fairly similar to its predecessor, as you might expect from the outside appearance of the 4S, but also show some noteworthy changes.

The new iPhone’s battery, for instance, has a higher capacity, with an extra .05 WHrs versus the one found in the iPhone 4. This will get you more talk time, but will cost an extra hundred hours of estimated stand-by time. iFixit notes that considering the performance improvements the new iPhone boasts, that’s actually a pretty impressive rate of power consumption.

Also different is the logic board, at least when compared to the GSM version of the iPhone 4. It resembles the CDMA version of Apple’s last smartphone, which makes sense because that device also housed a dual-mode capable cellular chip, though it wasn’t actually an active world phone, like the 4S is. The cellular chip is indeed supplied by Qualcomm(s qcom), as has been previously reported. It’s labelled “MDM6610,” and seems to be a direct successor to the MDM6600 chip found in the CDMA iPhone 4. There are a ton of other chips included, too, most of which contribute to the work of making the 4S an effective dual-mode world phone.

The A5 chip is there, as Apple announced, and also the onboard RAM, which iFixit has determined is a 512 MB module. That’s not the 1 GB some early reports anticipated, but it should be plenty combined with the new dual-core processor.

Other interesting details from the teardown are the discovery of white and red liquid indicator under the panel housing the home button. Contrary to what some previous reports had speculated, this means Apple can still easily tell if your iPhone has been submerged or exposed to lots of water, which isn’t covered under the iPhone warranty. There’s another liquid indicator located on the EMI shield that covers the logic board.

The display assembly runs is the same as the one found in the GSM version of the iPhone 4, one of the few things that isn’t borrowed instead from the CDMA version. One thing that is thankfully carried over from the Verizon iPhone is the vibrator motor responsible for silent notifications, which iFixit says is much quieter and softer in intensity than its predecessor.

For an up-close-and-personal look at the cameras, screen and everything else that makes the 4S tick, head on over to iFixit’s full break down.