Right there, at the bottom of the Phone settings menu (below “Call Forwarding” and “Call Waiting”), was the magic button.
By design, the iPhone does not show notifications or standard call log entries for calls made while a number is blocked. However, there are two ways to check for activity: Check the "Blocked Messages" Voicemail Folder how to find blocked callers on iphone
In most cases, when you block a number in one app (like the Phone app), it automatically syncs across Messages and FaceTime. However, checking individual sections is useful if you think you might have missed a specific setting. Right there, at the bottom of the Phone