1, restart navigation to restore factory Settings, restart button is a small built-in button, on the back or side of the machine, all gps navigators have this button (used after crash);
< br >
2, press the restart button, see whether the screen reaction, there is a reaction to the Settings inside the calibration screen, calibrated after the fine;
< br >
3, the screen does not respond after restarting, charge the battery for a long time, you can take down the battery holder to charge, take down the battery with line charging; If not, it can only be sent to repair;
< br >
4, in addition, check whether the interface is loose, whether the tide is too high in the car, and the temperature is too high.
There are many reasons for the touch switch failure, it may be caused by poor contact, need to cut off the power, and then wipe the contact clean to repair; The circuit board may be burned out, and the circuit board needs to be replaced. It is recommended to contact professional personnel for operation. The switch may be stuck, you can disconnect the power supply, and then take off the switch panel to see if there is any foreign matter stuck.
zero
In the case of touch failure, it may be that a corner of your mobile phone stand hit the mobile phone screen, so the situation is broken. In this case, you can change the position of the phone holder
zero