Use a plastic opening tool to release tabs that hold the front panel and back panel together. There are three tabs on each side of the device that need to separate for the device to open.

The use of a plastic opening tool is recommended to avoid damaging the remote. Use stronger tools as a last resort.

Be careful on the right side (looking at the back side) not to hit the screen ribbon cable. If that is hit and breaks, the touchscreen will not work properly. (example shown in the image)