Work your way around the perimeter of the phone with a spudger and plastic opening picks to free the clips that secure the rear case to the display assembly.

A metal spudger is pictured, but it is best to use a nylon spudger to prevent marring the device.

Be careful not to lose the power button: it sits loosely in the top of the lower chassis.

Significant force may be required to pry the casing apart.