For the last two weeks I've been having serious problems with my phone. It keeps freezing up on me. The screen stops responding, but I can use the power button to turn the screen on/off. If I hold the power button, i can get the "Power off" button to appear on the screen, and when I tap that, the screen actually responds and the phone shuts off. I'm having to restart my phone multiple times a day. I've already tried booting into safe mood and clearing the cache, but the problem persists. Anyone else having this?