If you know the number or person you want to unblock but don't want to dig through a long list of settings, you can do it directly from the "Recents" or "Contacts" tab in the Phone app.
iOSHacker 1:25 How to easily unblock a number on your iPhone - Asurion Fast fix * Open your Phone app, then tap Contacts. * Select the person's name, then scroll down and tap Unblock this Caller. ... H... Asurion How to easily unblock a number on your iPhone - Asurion Fast fix * Open your Phone app, then tap Contacts. * Select the person's name, then scroll down and tap Unblock this Caller. ... H... Asurion How to unblock a number that is in my contacts on iPhone 1 Feb 2024 — how to unblock contact in iphone