When you get a new iPhone and then jump on a plane here are the crazy things (that people done tell you) you need to remember to do:
- Data roaming for whatever reason is not coming through. This setting is actually really buried in the interface. Settings > Cellular > Data Roaming needs to be set to on.
- Face ID Will be disabled for all your applications. This is a security thing. The Secure Enclave on your old phone knows you are but the new phone doesn’t. So you have to reenable it all.
- The same thing is true for your mail accounts. Although you have keychain enabled for security reasons again since these are app level things so they need to re-enabled individually.
The main reason for the last two is security. And the former is probably the same. But confusing
