So, after accidentally putting my phone into airplane mode, I held down the power button to get it back on. Since then, my screen keeps turning off. The touch screen works fine, but now every physical button (except the power button) shuts the screen down. The volume, the keyboard, even the Home, Search, Back, and Menu keys turn the screen off. Does anyone know why this may be? Or if I hit some wonky setting? Thank you in advance.