问题
I'm doing some research on the way to use a certificate from a SIM Card (in order to keep the service provided, if the user wants to change his phone).
In Android, it seems OK, but I can't find anything in the iOS platform: is it possible to read X.509 certificates from the SIM card through an iPhone device?
回答1:
No.
Your best bet is to use either the Keychain or iCloud to persist data between devices.
来源：https://stackoverflow.com/questions/12705603/read-write-certificates-on-a-sim-card-ios