After the launch, on October 14, many people now have the iPhone 4S. What’s inside the iPhone 4S? Well, for starters, the iPhone 4S has a major performance upgrade with the Dual-core A5 chip, instead of the A4 chip used in the iPhone 4. The iPhone 4S now has Siri as a built-in assistant and a 8 megapixel camera. It also records video with 1080p 30 fps (frames per second). It uses Wi-Fi 802.11b/g/n and now uses Bluetooth 4.0.
iFixit decided to disassemble the iPhone 4S and take a closer look to what’s inside the iPhone 4S. With a first look, they noted that the SIM card slot is back. After having a deeper look, they find that the iPhone 4S’ battery has an extra .05 WHrs comapred to the iPhone 4. The iPhone 4S has an extra hour of talk time compared to the iPhone 4 on the 3G network. The iPhone 4S has the same amount of talk time in the 2G network, but 100 hours less of standby time, most likely because of the Dual-Core A5 chip consumes more energy.
For a more in-depth look into what’s exactly inside the iPhone 4S, check out iFixit’s iPhone 4S Teardown.
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![[Image Source]](http://www.apple.com/iphone/compare-iphones/images/compare_chip_a5.png){kind=link}