Ever since the new software update, my touchscreen has been acting up. It's like it works when it wants to. When I restart the phone and it reboots a little box pops up that says Android is upgrading, touchscreen firmware updating. Can anyone help me? I just bought this phone a month ago and they say I've voided the warranty so I can't return it. I'm desperate bc I can't use the phone with the screen acting like this.