Thanks to some tweaks to the iOS Simulator application that is included in the iOS development tools, we were able to run the simulator at the rumored next-generation iPhone display resolution of 640 x 1136. We did this running both the current public release of iOS 5.1 and the upcoming iOS 6.0 The iOS 5.1 simulator displayed the home screen with a stretched set of four rows of icons. On the other hand, iOS 6 displayed five complete rows – as our sources said Apple was testing for taller iPhone displays.
Comparison of iOS 6.0 and iOS 5.1 running at 640 x 1136
This proves that the upcoming release of iOS 6, which will obviously come pre-loaded on the new iPhone, is well-aware of taller iPhone displays. It scales perfectly to the taller resolution.
Perhaps even more interesting is that the simulator will not correctly display five rows of icons at resolutions other than 640 x 1136. At other resolutions, the icons will scale to an iPad-like home screen layout, not at the proportions and spacing of the current iPhone and iPod touch display. This may just add another layer of proof that the next-gen iPhone display will come in at a resolution of 640 x 1136.