this is especially annoying when making calls that require number inputs such as voicemail. I'll try to type in my password or account number and the screen will go black. I hit the power button and I can maybe enter two numbers before it goes black again. I just got this phone and am pretty certain this wasnt an issue originally. All of a sudden this sprang up out of nowhere and I have no idea how to fix it. I did some searching and read something about the proximity sensor?, but that didnt really help the situation.