- Excellent stand and working time. - Power on: Open the back. Sim card in the deck will automatically boot. Light boat is 3 seconds. After the lights go out you can enter the sim card number. - Installation: Confirm GSM Netord signal strength. If it does not affect the results of the case can not be used. - Number of settings: SIM card number with a cell phone or phone, then hang up on setting success. - Voice feature: send 1111 message to the SIM card number, then voice control is open; Send 0000 message to the sim card number then voice control is off. - A flash of red light indicates the SIM card is properly inserted. The Sim will complete the configuration, keep it in standby mode, turn off the light and it is ready to go. Charging method: When the device is fully charged, only the red LED lighting is on. Green LED light off.