Open the back cover.
Using a screwdriver (hex T4), unscrew 11 bolts in the frame of the phone. Remove the the bracket holding the battery connector.
Disconnect connector on the PCB and remove the battery.
For careful separation, we recommend using a heat gun. At the same time, it is necessary to heat carefully in order, not to damage the surface of the device.
Using the tweezers, open the SIM card tray and remove it.
Do not push too hard this may cause damage.