We start by removing the back cover. For this we can heat it to about 60ºC for about a minute. When it is hot, we introduce an opening tool to detach it and at the same time unhook it from the notches that hold it.

To remove the intermediate casing, first remove the seven Phillips screws (PH # 00) that hold it and then pry it off.

In this step we disconnected the battery, the screen flex, the interconnection, the coaxial antenna cable and the flex of lateral push buttons.

Now we remove the Phillips screw (PH # 00) that holds the plate to the chassis and also remove the SIM / SD trays.

Now we can disengage the motherboard.

To finish, we took out the two Phillips screws (PH # 00) that hold the push button holder and unlocked it. It only remains to take off the flex support.