According to Apple's internal survey conducted with early iPhone 5 buyers, the company was well aware it didn't have what consumers wanted most, as far back as the Fall of 2012.
An internal research note from Apple’s lawsuit with Samsung, published by Business Insider reporter Jay Yarrow, indicates the one thing iPhone 5 buyers wanted most was longer battery life, hardly a surprise as the longer-lasting battery is the most frequently cited complaint among smartphone buyers in general.
Early iPhone 5 adopters were also asking for a much improved built-in Apple Maps application, the #2 item on the wish list, and a bigger screen as the third most often requested feature. We're of course expecting iPhones with bigger screens in the second half of this year.
If there's any substance to the rumors floating around, Apple is working on a 4.7-inch iPhone and another one with a screen measuring between five and 5.7 inches diagonally, although the latter model could be delayed over issues with in-cell production technology for the larger screen size...