My guess is by the time you mod the at&t back panels to fit the square camera bezel and ensure the big buttons/notification LED align correctly it would look ugly. I rarely use the rear buttons. When I do I have a LG G2 Ballistic SG Black Case (VERIZON) SG1233-A065 on it, that covers the buttons with rubber buttons that work well for me. I don't touch the camera lens either, and it does not bother me that I covered up the notification light.
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