When I unlock my phone phone up after is it sitting a while, the screen is extremely dim. I can hardly see it. It is so dim I can't even read text messages. I have to lock it and unlock it several times before I can see anything.

I have tried turning off auto brightness. I have also tried turning off power save mode, but I have had no luck.

Does anybody have any suggestions?

EDIT: It is actually dim right from when I try to wake it up. Unlocking it doesn't make it any brighter. If I turn the brightness all the way down, it is still not as dim as when this occurs.