What should I do if I fail to connect to M15 device and Sight APP?

Please confirm whether the device information is added in the APP. 

If the device information has been added in the APP, please confirm your device currently has the data plan in use. 

If not, please purchase a data plan firstly. 

It is recommended not to use an SD card that is a combination of a Mini SD card and a TF card holder. And try to 
reinsert the SIM card and attach the 4G antenna. Then open the Sight APP again and switch the device switch to 
SETUP mode to reconnect. If not, please scan the QR code to add the device information first.

If the problem persists, please contact customer service support with the following information:
1. IMEI Code
2. The status of the indicator lights