Problematic callers can be blocked on a per-number basis on an iPhone -- the process is simple. But how do you unblock a number if you've made a mistake?

Select Blocked numbers. Check the blocked numbers list. Tap Add a number to enter a phone number to block calls and texts from them, or tap the X beside a phone number to unblock them.

This guide is designed to show you how to unblock a number on your iPhone. In the modern digital world, our phones have become our primary means of communication. Our mobile phones serve as our ...

While it makes sense to block some numbers, there may come a time when you change your mind—or block the wrong person—and have to scramble to figure out how to unblock someone on your iPhone.

Thankfully, it's pretty easy to unblock a blocked number on your iPhone. All you have to do is go to your Settings, read down, and select Phone.

You can't see blocked messages from a number you've blocked on an iPhone, so you'll have to unblock that number if you want to receive texts from it.

If you don't want certain numbers or contacts messaging or calling you on WhatsApp, you can block them by adding them to your block list.