Discount dual sim card fwp fixed wireless phone

Q1. How to check the software version

  A: Turn on the device, it will show the software version  number on the screen during startup.

Q2. How to enter factory test mode

  A: (1) For some old version, when the device is under standby state, click keys *#55#, it will enter factory test mode

      (2) For new version, after press power on key, when the device is in startup, click the key “Cancel”.

      It will show “Factory Mode”, then input keys *#55#, and click key “Menu”, then it will enter factory test mode.

      In factory test mode, you can test lots of hardware function such as test printing, test keypad, test LCD, test GPRS connection, test SMS and so on.

Q3. Can not Turn On

  A: Check the power adapter, or try to change another workable power adapter.

      Check the battery, or try to change another normal battery.

Remove the battery, and only connect the power adapter. Or only use battery, and do not connect power adapter to test it. Then check the Power Supply Circuit and switch on/off the circuit according the test result.

      If the circuit has no problem, and it still can not turn on, please try to discharge.

Q4. Can not detect the SIM CARD

  A: Please check whether the SIM card is installed well.

      Install the SIM CARD again.

      Change another SIM card

      Scrape the surface of the metal spring in the SIM CARD slot with knife.

      Check whether all the weld point of the SIM CARD slot is welded well or not.. If not, please weld it again.

      Replace the part of the SIM CARD slot.

Q5. Can not detect wireless signal

  A: Please check whether it has GSM wireless signal in this place. If it has no GSM wireless signal or the signal is very weak, please try to test the terminal in another place with good GSMwireless signal.

      Otherwise, please open the shell of the device, and check if the antenna is connected well.