Note: Please be careful with the operation. Do not forcibly unplug
charger from charging interface, otherwise phone or charger may be
damaged.
Please completely charge the battery before use.
Do not remove the battery or the SIM card while charging the battery.
If the battery is used up, the phone will automatically shut down.
2.4 Installation of SIM Card
Metal contact surface of SIM card is easily scratched. Before assembly, you
must remove it carefully.
Turn off the phone, and remove the battery and other external power
supplies.
Insert SIM card into SIM card holder in the direction of arrow.