Moyens I/O
If you have blocked a phone number on your iPhone and wish to unblock it, you can easily do so in just a few steps. This can be helpful if you’ve accidentally blocked a number you didn’t mean to, have made up with an ex, made good with a friend you were having a dispute with, or in other circumstances.
Whether you have an iPhone 15, iPhone 15 Pro, or an older version, the steps to unblock a number are the same.
There are two distinct methods you can use to unblock someone through your iPhone, depending on whether they are listed in your Contacts app.

Moyens I/O
How to unblock a phone number on iPhone
Hastily blocking a phone number on your iPhone probably involved a number not associated with a contact. This could have been a telemarketer, scammer, bill collector, or more.
Step 1: To get started, select the Settings app on your iPhone. Next, scroll down, then choose the Phone option.

Moyens I/O
Step 2: Select Blocked Contacts. Swipe left next to the contact you wish to unblock. Tap Unblock.

Moyens I/O
How to unblock a contact
Do you have a contact on your iPhone that you previously blocked, but now want to unblock? Here’s how to do that.
Step 1: Start by tapping on the Contacts app on your iPhone. Next, select the name of the person you wish to unblock.

Moyens I/O
Step 2: Scroll down and choose Unblock this caller.

Moyens I/O
As you can see, unblocking someone on your iPhone is a relatively pain-free process. Just perform a few steps and you’re good to go!