The Universal Otterbox defender is supposed to work for both ATT and Verizon iPhone 4. On the Verizon iPhone 4/4S, Sprint iPhone 4/4S, and the ATT iPhone 4S, the mute button is moved down. The Universal Otterbox defender FITS all iphone 4/4S models.
Originally Posted by PinkRoze
I briefly used it with my iPhone 4S and had no issues. The proximity sensor was fine. I didn't notice
the auto brightness but honestly I didn't test it. I ended up giving it to a friend with an iPhone 4.
I have an Otterbox Defender for the 4S and Otterbox Commuter currently.