To begin with we will have to take off the back cover, for which we will heat it and thus we will soften the adhesive. Then we will slide a flat opening tool around the contour to separate it.

We take out the seven Phillips screws (PH # 00) that hold the internal casing and remove it. Then we remove the other seven Phillips screws (PH # 00) that hold the module and we disengage it.

We disconnect the components of the motherboard and remove the SIM / SD tray. Then we lift the plate from the bottom to disconnect it from the auxiliary plate.

Now all that's left is to take off the battery from the chassis. We will pry with a flat tool and heat it to soften the adhesive if necessary.