Because people buy the bigger ones. The market seems to have established that the 5-5.7" range is where the money is to be made. Anecdotally, 5" is pretty perf

Because people buy the bigger ones. The market seems to have established that the 5-5.7" range is where the money is to be made. Anecdotally, 5" is pretty perfect for me, and using an iPhone 5 is a very frustrating experience.