I am trying to unlock my iPhone 8 Plus. After the asking for a second time I received this email but wondered if I'll receive another when the phone is unlocked? I don't want to try changing the sim incase this messes anything up.
Yes, you should receive another email when it is complete. Unlocks can take around 48 hours to complete. Possibly longer if it is a weekend day. Here are some tips for a successful unlock SOLUTION: Sprint Hints for Successful Unlocks
It depends on how it is is sent if you will get a email or not. The way yours was put through you will receive a email.