1. Activate your SIM card at Spectrum SIM Platform.

2. Ask your device seller this question: Is the device an unlocked 4G for the US markets? If the answer is No. You cannot use it in the US.

3. If this is an unlocked 4G version for the US markets, then ask for user manual.

4. In the user manual find the place that shows you how to setup APN. Typically it is like: APN, 12345678, apnname.

5. Take your phone sim card out and insert your phone SIM card into the GPS tracker

6. Use a different phone to send the SMS command from Step 4 to your own phone number.

7. If all is well, you should receive a reply like "APN setup OK".

8. Use the same method to send other SMS commands from your GPS user manual to setup your tracker.

9. After the setup, take your phone SIM card out and put the our SIM card in. You are all set.

10. Alternatively, you can ship your unlocked 4G device to us and we will set it up for you.