I have the same issue with my iPod. Only half the screen works (right side). I use Zoom, one of the things in the Accessibility settings, to navigate to the left part of the screen where i cannot access. One of the hardest parts of using it that way is typing. Usually, the app doesn't support horizontal view, so i have a somewhat difficult time typing in portrait. If i have to type something large, i use the Notes application because i can write horizontal there, then I paste it over to the app. Most games are unplayable since you need the full screen to play. I can use some games like real racing 3, and Agar.io because both use only one side of the screen. So far, it isn't that bad. I am getting it fixed in 2 weeks so it isn't a bad alternative especially if you need a device to use.