The rear panel of the phone is responsible for keeping all of the device's hardware safe and secure. It is secured by eight 8.3 mm Torx head screws, and is accessible by first removing the back cover and battery. If the rear panel is damaged, it should be removed and replaced as a damaged panel can lead to damage of other internal hardware.
Use the spudger to pry the back cover off.
Use spudger tool to pry under the battery to lift it up and out.
Remove eight 8.3mm T4 screws with the Torx screwdriver.
Pry the back panel of the screen using the plastic opener.
Work your way gently around the device, using picks as necessary to keep the back panel separated.