The manual (Manual supplied by Chinese Vendor is XYZ i know) is not very clear about the usage especially in commands (send text message to interact with the device).
Please first go to an open space area so the device can receive GPS signal. Insert a GSM Sim Card and turn on the device.
Send a SMS Text Message begin123456 to the Sim Card (Mobile Phone Number). This will initialize the the password as 123456 for the tracker. If your device has been initialize (just in case our staff has tested the device before shipping), try to change the password by sending a text message password123456 987654 to the tracker. The tracker should respond PASSWORD ok! This will change your password from 123456 to 987654.
Turn On Tracking Mode
Send tracker123456 to the tracker to set the device in Tracking Mode. The tracking should respond TRACKER ok!
To authorize your another mobile number to the allow-list of the tracker. You send a message admin123456 99887766 to the tracker, this will authorize the mobile number 99887766 to the allow-list. The tracking should respond ADMIN ok!