Why I can not unregister my SIM card?

Please check these following things before carrying out the unregistration process

1. Make sure your SIM card is installed on your device
2. Make sure you are not using WIFI
3. Also make sure you are not using a VPN / DNS service

If all is checked but you are still having problems in the unregistration process, don't hesitate to contact Nindy on livechat!