I have read some of the questions and answers on the various forums. Most of what is said is way over my head. So yeah, I'm not even knowledgeable enough to be a noob. Here's my problem. I bought an HTC clone. It runs Android 2.2.1 with (CPU MTK6516 DUAL CORE 460MHZ. RAM/ROM 512MB ROM+256MB RAM.) copied from the sellers site. The phone works great.....but.....when I make a call (whether I use the contacts or the keypad) the screen goes black and stays that way until the other party hangs up, or I take out the battery. Is there a simple way to get the screen to stay on during the call? There is a Proximity Sensor Calibration tool, which I've tried to use, but it doesn't seem to do anything. Help!