The iPhone 5 features an improved system on chip (SoC), called the Apple A6, which Apple says achieves twice the performance of the A5,[6][48] the SoC comprises a 1.3 GHz dual-core processor, 1GB of RAM and a tri-core PowerVR SGX543MP4 running at 266 MHz.[49][50] The iPhone 5's operating memory (LPDDR2-1066 eDRAM) was doubled, from 512 MB to 1 GB. Storage capacities available are fixed at 16, 32 or 64 GB, the same as the 4S; plug-in memory cards are not supported. The two color options are black (with black glass and slate-colored metal trim), and white (with white ceramic and silver-colored metal trim); again the same color options (though differently implemented) as its predecessor the 4S had.[51] The iPhone 5 retains the 8 MP back camera on the iPhone 4S, but has improved low-light performance, and has a 40% faster photo capture[52] than its predecessors, while having a purple hue when a strong source of light is present in the photograph.[53] The front camera, which is accessible through the FaceTime and camera app has a lower resolution, at 1.2 megapixels. The rechargeable lithium-ion polymer battery with a charge capacity of 1440mAh[4] is built in and cannot be replaced by the user; it is rated at 225 hours of standby time and 8 hours of talk time. While not included in Apple's press conference announcement on September 12, 2012, there are actually three separate models of the phone available: one supporting CDMA and two GSM versions that differ only by the LTE bands they support.[54] This can have knock-on effects for which version of the device will actually work in which countries/regions. The phone takes a nano-SIM, smaller than the micro-SIM of the iPhone 4 and iPhone 4S.[55]
Hardware benchmarking conducted using Geekbench and GLBenchmark validates several claims that Apple included on their website and mentioned at the unveiling of the device, these include two times faster and two times the graphics performance. In the Geekbench overall hardware assessment, the iPhone 5 received a score that was approximately 2.5 times higher than the iPhone 4S. The benchmark conducted using GLBenchmark for the iPhone 5 returned a score that was 2 times better than the iPhone 4S. The result was however inconsistent as a 3D graphics benchmark assessment using Passmark returned a score that was only approximately 1.45 times better than the iPhone 4S.[56][57] Battery life assessments conducted by AnandTech concluded that the battery life is shorter on the iPhone 5 than its predecessor when performing certain tasks, however when performing other tasks the iPhone 5 battery outlasts the iPhone 4S.[58]
The display is 1,136 × 640 pixels with an aspect ratio of almost exactly 16:9, (minus one extra row of horizontal pixels). With a diagonal of 4" it has a display size of 6.7 square inches, compared to 5.7 in iPhone 4 and 4S.[59] The pixel density remains the same as the 4S model, which is 326 pixels per inch. Now, the matrix icons appear as a column 4 of 6 icons, including those located at the bottom. This gives an extra row of icons on the desktop. In-cell touch sensor technology from Sharp allows the screen to be thinner, allowing for a thinner phone. The screen's color saturation is 44% greater than its predecessorK.
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