Using the key tool, open the SIM card slot and remove it.
Do not push too hard this may cause damage.
Open the back cover.
Using a screwdriver (Phillips 1.5 mm PH000), unscrew 12 bolts in the frame of the phone.
Pry and remove the steel frame hiding the PCB.
Pry and remove the bottom part with buzzer (speaker).
Disconnect the connector on the PCB and remove the battery.
Disconnect the coaxial cable connector on the bottom board and the inter-board flat cable connector on the main board, and remove the bottom PCB with a charging port and a vibrator.
Disconnect the connectors on the PCB and remove the camera and FFC (flexible flat cable) of volume and power buttons.
Disconnect the connectors on PCB.
Remove the PCB.
Parts in the frame of the display module.