"SIM Not Supported"? What do I do?
What do I do when I switch carriers and get a new SIM card and it says this "SIM not supported. The SIM card that you currently have installed in this iPhone is from a carrier that is not supported under the activation policy that is currently assigned by the activation server. This is not a hardware issue with the iPhone. Please insert another SIM card from a supported carrier or request that this iPhone be unlocked by your carrier. Please contact Apple for more information.
iPhone 11 Pro