We start by heating the back cover to soften the adhesive. With the hot lid, we introduce a flat tool, plastic if possible, and slide it around the contour until it takes off.

Now we take out the upper housing / antenna. To do this, remove the four Phillips screws (PH # 00) that hold it in order to disengage it.

Then we take out the central intermediate casing. Remove the six Phillips screws (PH # 00) and disengage.

To remove this casing / antenna, remove the four Phillips screws (PH # 00) that hold it and disengage it.

We heat the device to soften the battery adhesive. While it is hot, we will leverage to take it off. Although it is very stuck, without much force will end up taking off.