SIM card doesn’t support

If there is an update available from your Carrier, you can update in Settings → General → About. Your iPhone must be connected to either Wi-Fi or Cellular Data.

You can find more information here:

Manually update your carrier settings on your iPhone or iPad - Apple Support

Hey there,

You might see this message on your computer or iPhone: "The SIM card inserted in this iPhone does not appear to be supported. Only compatible SIM cards from a supported carrier may be used to activate iPhone. Please insert the SIM card that came with your iPhone or visit a supported carrier store."

If you see this message on your device with iOS 14 and later, use these steps:

1. Go to Settings > General and tap About.
2. Under Carrier Lock, you should see a message that says, "No SIM restrictions." If you don't see that message, contact your carrier.

If your device is on iOS 13 or earlier, use these steps:

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