I could be wrong about this but wouldn't a 4-inch screen be relatively easy to implement? Again I could be wrong, but everyone keeps saying it would cause fragmentation issues with current apps...but how? If Apple keeps the current screen resolution and stretches it out over a 4 inch screen, wouldn't apps be able to run perfectly? Sure, the screen would not be as crystal clear as the iPhone 4, but according to my calculations the current iPhone resolution over a 4 inch screen would still leave you with 288dpi, which is still very high. I could be very wrong about all of this, but I feel like a 4 inch screen would work perfectly as long as the resolution was kept the same. Thoughts?