To remove the back cover, we will detach it by inserting a spike between it and the frame. To make the task easier, we can heat the lid for approximately one minute at 60ºC.

We extract the screws indicated in the second image to be able to remove the intermediate casing and the lower antenna module.

To finish, we disconnected the battery and detached it from the chassis. If necessary, we can heat the device as if we were to remove the screen, to soften the glue.