So i began to have this problem where the bottom of my iPhone 5 screen started flickering so i restored to bew no backup ir anything and it still did it so i began to think it was hardware related something with my LCD but then i restored again and it went away so i don't get it. This has been going on for awhile because i had to restore few more times and everytime i restore it happens so i end up having to do another restore after each restore just so i can get rid of the flickering screen. What is this problem?