Apple’s iOS includes a feature called . When enabled, it automatically silences calls from numbers not in your Contacts, Mail, or Messages. While this is a great tool for stopping spam and robocalls, it can also cause you to miss important calls from doctors, delivery drivers, or interviewers.

How to Unblock Unknown Callers on iPhone (And When You Should)

Even if you unblock unknown callers, you can still let unknown numbers go to voicemail manually. Let the call ring and don’t answer. If it’s important, the caller will leave a message. If they don’t, it was likely spam.

If you’ve enabled this feature and want to start receiving all incoming calls again, here’s how to unblock unknown callers on your iPhone.