Sim card not supported

Hello,

Try these steps:

1. Restore your iPhone to factory settings.
2. Contact your carrier to make sure that they applied the unlock in their system.
3. Restore your iPhone from a backup.

Thanks,

EpicX :)

“SIM card not supported” means that the phone is locked to a carrier, and the SIM is not for that carrier. You will have to find out which carrier it is locked to, then contact them and ask what their unlocking policy is. There is no other way. You can try asking Apple which carrier it is locked to. Sometimes they can tell you. Use the Contact Support link at the top of this page. Or ask your cousin what carrier it is locked to.

The phone is carrier locked.

Contact your cousin. They will have to contact the carrier it is locked to and ask to have it unlocked.