I currently use the power button to end calls. When I am on a call on blue tooth, I cannot bring the screen back up after it times out. Is there any way to do it without hanging up on my call?
Actually, try this:
Cover the sensor and then uncover the sensor.
I use to keep the screen off with speaker phone. And in a lout environment put the phone closer to my ear and when I pulled it away the screen would come back on.