The outer housing can be removed to be cleaned or swapped to a custom housing.
Remove the rearmost panel by pushing down on the silver button, then simultaneously pulling downward on the panel.
Lift the panel off of the phone.
Using your thumbnail or a thin flat head screwdriver, peel back the screen protector on the inside of the phone: It is only held on by glue but may take a good amount of force to be removed.
Unscrew the four screws using the T6 Torx Screwdriver.
Peel back the screen protector frame. Close phone at the hinge, then pull off the front outer casing.