Here are some limitations of the blocked numbers feature on iPhone:

: Open a conversation, tap the contact name or number at the top, scroll down, and tap Block this Caller .

The blocked numbers feature on iPhone is a solid feature that gets the job done. While it's not perfect, it's a useful tool for managing unwanted communications. With regular updates and improvements, it's likely to remain effective in blocking nuisance calls and messages.

: iMessages and SMS from blocked numbers are simply not delivered. You will never see them, and the sender won't receive a "Delivered" notification.