I don't know if this is the right forum for this but I am having an issue with phone calls. When I am on a phone call and I go to press the end call button, the screen goes black. It's like it's fighting with me. I'll press end call, the screen goes black, lights back up, and every time I touch the screen anywhere it will go black again. The only way I can end a call is by pushing the button on the right side of the phone, unlocking the screen, and ending it from there. Any ideas on what this could be?