Nothing has happened to it, I was just using it set it down, picked it back up a few minutes later and boom this line is there?? It also affects the use of the phone. I don't get what could be wrong?
iPhone 5
Reset, hold both Home and Power buttons for about 10 seconds until iPhone begins to restart itself, ignore the "slide to power off", let the iPhone restart itself. See if better, if still problem, Restore the iPhone with current iTunes on your computer. See if fixed. If still problem make Genius reservation or set up Service and take or send to Apple for resolution under Warranty.
My brand new IPhone has a line down the screen.
