"SIM Not Supported": The Screen of Death Explained

You bought a new SIM card, inserted it, and your iPhone went back to the Hello screen with the message: "The SIM card that you currently have installed in this iPhone is from a carrier that is not supported under the activation policy."

Why is this happening?

This is not a hardware failure. Your iPhone is locked to a specific carrier (e.g., AT&T or T-Mobile), but you inserted a different SIM (e.g., Vodafone or Verizon). The iPhone asks Apple's server: "Can I use this SIM?" and the server says "No".

Solution 1: The Official Unlock (Permanent)

This is the only way to make the message disappear forever.

1. Find out the Original Carrier (use our IMEI Check).
2. Check if the device is "Clean" (not financed/blacklisted).
3. Order a factory unlock service via our bot.

Solution 2: "Carrier Reveal" (If you don't know the carrier)

You cannot unlock the phone if you don't know who locked it. The error message does NOT tell you the carrier name.