IP66 Waterproof GPS Tracking Device 4G LTE Program Engine BD2

4G LTE Program Engine IP66 Waterproof GPS Tracking Device Remote Control Install SIM Card The device supports a 2G/3G/4G SIM card; Please make sure that the SIM card has sufficient balance, the GPRS function has been activated and the correct APN of the SIM card has been confirmed; Please make sure that the PIN lock function of the SIM card is turned off; If you need to use the function: Call to reply location, please make sure that the SIM card has the caller ID display