When on a call on the v10 I am unable to see incoming calls. The screen is completely black even the 2nd screen is unlit. The sensor on the front will not allow the phone to light up if it is totally dark in the room. It's almost like the phone is still in a holster sometimes even pressing the power button will not light it up. The only way is to shut it down and restart it. Is there settings on the phone for these issues