GPS Not Responding to SMS CommandsUpdated 2 years ago
If you have sent an SMS command to the unit and it has not responded within 5 mins check the GPS is on and move it to a location where it can see the sky.
You could also check by turning the GPS off, removing the Sim Card and placing it into your phone. Once the Sim from the GPS is installed into your phone check it has credit by making a phone call and visiting a website.