Hold the power button until the power menu appears, then select 'Power Off' to ensure the device is completely shut down. This is crucial to prevent any electrical damage during the repair.

Using the SIM ejector tool, gently push into the hole next to the SIM card slot to release and remove the SIM card tray. Set it aside safely.

Use a heat gun or hairdryer to apply moderate heat around the edges of the back cover. This will soften the adhesive, making it easier to remove the cover.

Carefully insert a plastic opening tool between the back cover and the phone frame, gently prying around the edges to release the adhesive. Use a suction cup if necessary to lift the back cover.

With a Phillips #00 screwdriver, carefully remove all screws securing the internal plastic cover and the battery connector. Keep these screws organized.

Use a spudger to carefully disconnect the battery connector from the motherboard to prevent any electrical shorts during the screen replacement.

Heat the front screen edges using a heat gun or hairdryer, then use a suction cup and a plastic opening tool to gently lift and separate the screen from the frame. Be sure to disconnect any flex cables connecting the screen to the motherboard.

Carefully align the new screen with the frame, connecting any necessary flex cables to the motherboard. Ensure the screen fits snugly into the frame without any gaps.

Reconnect the battery, replace the internal plastic cover, and secure it with the screws. Ensure all components are properly aligned and secure before proceeding.

Apply new adhesive strips if necessary, then press the back cover firmly onto the phone frame. Insert the SIM card tray back into its slot. Power on the device to test the new screen.