I went ahead and had a Zagg put on my GNex (wanted one that would last). I had it puton at the store because if they mess it up they will replace it. Here is my question: After they put it on, I am getting not sound out of my speaker (top of the phone) when making a call. Has anyone else had this happen? I have never used a screen protector - always had Motorola deviced with Gorilla Glass. After I got home I read the directions for installation and they say to power the device off and remove the battery. It also says that I should leave the phone powered off for 12-24 hours. Does anybody that has used one in the past have any info?