If you’re having trouble with the set up and activation of your Belong SIM, try these troubleshooting tips:
Power off and on your device
Retry the setup and connect process if you haven't done so already
Double-check that your SIM is inserted into your phone correctly
Remove the SIM card, gently wipe the metal contacts with a soft cloth and reinsert it correctly
Try inserting your Belong SIM into another unlocked device and see if it works there. If it does, it might be that there is an issue with your device