I upgraded to this Droid Maxx maybe two weeks ago and several times my screen has become unresponsive to certain selections. It allowed me to select the phone button, scroll up and down the call list but not recognize my choosing to call someone. Allows dialpad to show but not select numbers. It allowed access to messaging but will not recognize usage of keyboard. Another time after just texting by using the talk to text feature, the bottom half of the screen displayed the black space with microphone (talk to text display) that would not go away no matter which the screen selected. I screen captured that issue. Everything always go back to normal after a quick powerdown ( I do mean quick! Never had a phone come on so fast! Love it.) But it is becoming a regular happening, every other day or so.