Thanks for that. One question, I've used a scrolling wallpaper In my game, and I've created the effect by having two wallpapers exactly the same, constantly moving to the left, and when the left most background moves off the screen its position gets set to its current one plus a constant. (The width of the background x2). If I set my game up to play on the iPhone 4 resolution, will they be able to see the scrolling background on either side of the screen on an iPhone 5? (Given that the black borders will be on the sides rather than the top and bottom)
Let me know if you're not following because I feel like I haven't explained it particularly well.