iPhone 4S teardown: 512MB, tweaked battery, A5

The main circuit board of the iPhone 4S. (Credit:iFixit) Editors’ note:This article was originally published October 13. it has been updated throughout. A teardown by iFixit and analysis by iSuppli, Chipworks and others reveal theiPhone 4S as a mini version of theiPad 2 in many respects. Camera:A Sony CMOS sensor, according to Chipworks. overall, camera …