While disassembling and soldering, we need to heat it with rotational air and control the temperature. Attach the motherboard to the PCB Holder. Heat it with a Hot Air Gun at 240℃ and airflow 7. Tear off the sticker on the back of the motherboard.

Put the motherboard on the Heating Platform. We only need to heat the SIM card reader part. Fix the motherboard with high-temperature adhesive. Set the temperature of the Heating Platform to 200℃. Heat the edge of the SIM card reader with Hot Air Gun 280℃ and airflow 7.