Find the yellow pull tab located in the upper left corner. Pull the tab until the battery dislodges. Grab the battery by the raised edge, and remove it from the case.
Locate the seam between the back case and the end cover on the top edge of the phone.
Use the plastic opening tool to detach the two clips by wedging the tool into the right side of the seam and moving right to left. Once the cover comes off set it aside
Identify the screw located in the bottom right corner of the battery case. Remove the screw with a T5 (or in some cases T6) torx screwdriver and set it aside.
Locate the two clips on the inside of the case and use the spudger tool to detach them from the case. To detach each clip, use the sharp end to press the small, black plastic in the center of the clip.