To begin with we will have to remove the tray from the cards before removing the back cover.
Step 2 Back case
We remove the two Pentalobe 0.8 screws (TS1), and with the help of a plastic tine we uncouple all the edges of the casing.
Step 3 Side keys
Finally we will remove the side keys that we are going to replace.
Video Tutorial summary
In this video you can watch a quick summary of the tutorial, but we recommend to follow the complete tutorial, with its explanations and detailed images.