Is anyone else having this issue on Beta 4? The bottom right of the screen gets discolored out of nowhere (a green hue almost like when use press against an old computer screen) and then the phone restarts to the Apple logo. It doesn't seem to be causing any issues, but this is a replacement iPhone I just got yesterday from Apple and want to make sure it's just a common iOS 7 bug and not an issue with this phone specifically. If it is, I need to go get another replacement and am gonna quit with these betas. I just don't wanna downgrade back to iOS 6 just yet if it's gonna still happen regardless.