On the back Cutouts for the camera lens, flash, and the speakers are present on the underside remain the USB and the headphone jack free. When the on / off and volume up / down buttons of the envelope webs are attached to the inside, facilitate an operation by the shell. Nevertheless, these keys are without covers to better serve.
But: The reception of WLAN and GPS signals is greatly disturbed by the application of the envelope! Who wants to use his mobile phone with these signals, should stay away from this envelope.