Had an interested experience yesterday that I am going to share with Razr Maxx users, as a warning when choosing a screen protector. I bought mine at a Verizon store in the Mall in Kennesaw, Georgia. It was a Professional ScreenGuard made for the Razr. I was told that it would also fit the Maxx. The next day I found that I could hear my callers fine, but the person I was trying to talk to couldn't hear me! I called Verizon tech support, they told me to take my phone to a Verizon store, it was probably a defective speaker. When I took it to the Verizon store, the first thing they asked was where I bought the screen protector. I found that this "killer screen protector" was, in fact, covering (killing) the microphone! The mic is a hole located in the lower left of the glass, so if you buy a screen protector for your Maxx, make sure there is a hole or slot that allows the mic hole to be clear.