i don't know if it is just me, or if there's a plethora of people like me, but i constantly hit the back button to try to end a phone call, and all it does is return to my home screen but stay on the call (which is exactly what its supposed to do). this causes me to leave 5-minute voicemails of whatever i might be doing/talking about to people all the time. i found the option to hang up with the power button, but what im asking is if there is a way to set the back button to end calls, as opposed to going to the home screen and staying on the call