Want to start receiving calls and texts from someone you once blocked on your iPhone? Unblock their phone number and they'll be able to contact you again.
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If you don't have saved on your iPhone, but you have their number in the "Recents" tab of the Phone, you can use that tab to unblock the number.
To get started, open the Phone app on your iPhone.
At the bottom of the Phone app, tap the “Recents” tab.
On the “Recents” screen that opens, find the number you want to unblock. Then, next to that number, tap the “i” icon.
The history page of the selected phone number will open. Here, scroll down the page and tap “Unblock this caller.”
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Your iPhone will immediately unblock the selected phone number.

At the bottom of screen , you will now see “Block this caller” instead of “Unblock this caller.” This indicates that the phone number has been successfully unblocked.
If you have saved the blocked person's phone number on your iPhone, you can find it in “Contacts” and unblock them from there.
To do this, launch the Phone app on your iPhone. Then, tap “Contacts” at the bottom of the app.
On the “Contacts” screen that opens, find the contact you want to unblock and tap it.
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The details page for your selected contact will open . Here, scroll down the page and tap “Unblock this caller.”
And your iPhone will immediately unblock the selected contact!
