First, GPS positioning terminal equipment power off
Unlike wireless positioning products that do not require an external power supply, the first thing to check is that the wired positioning terminal fails to wake up
Power problem, once the device loses power, then the locator will not work.


Second, the GPS positioning terminal can not receive the signal
If the environment signal of the GPS locator is weak, then the locator can not receive remote commands, or the SMS gateway will delay, at this time you need to restart the device and reconnect.

Third, the equipment SIM card is stopped
The same reason as using a mobile phone, if the SIM card is down, it will also cause the device to be unable to receive remote instructions.

Four, instruction error
Send the wrong command, positioning terminal can not achieve the operation.