My Motorola Z4 will randomly freeze. When it does I can text, but can't place a call nor will it respond to the touch command. Once I was on a call and received a text notification tried to exit the notification but the touchscreen would not respond, the notification was blocking me from placing my call on speaker. Replaced the screen protector thinking this may be causing the problem but it still does it randomly. Brought the protector from the Verizon store.