Hey guys - see if you can help with these two issues? 1) After I make a call, the screen goes black in a matter of seconds. I'm typically using a headset when I notice this. To end the call (or enter numbers in a call menu) I need to press the sleep button to get the screen to light up again. This is a pain in the a$$. I have the screen timeout set for 2 mins. 2) About once or twice a day the home screen will lock where I can't press anything. I need to reboot to fix. About my phone: -Build #2 -Everything else works perfect -Everything turned off...4G, WiFi...etc.