Low latency for input audio processing. I'm making the switch from my iPhone 4S to Samsung GS3, but Androids audio latency is so poor that it's impossible to find any "guitar amp sim" apps or really anything that could be input as an audio signal and processed in real time. That's probably the ONLY thing I will really miss about the iPhone 4S. However, this doesn't come close to offsetting the puny 3.5" screen, no microSD, no removable battery, nor a file system, all of which I'm getting with the SGS3. But I will still miss that feature - I hope Android gets their audio latency issue sorted out. But the iPhone has seen better days. With only a 4" screen probably being relased in the next update (and just height with a change in aspect ratio), and still no micro-SD, I'd suspect is a slow decent from this point on unless Apple wakes up to the current trends.