How to unblock a blocked phone number on a Samsung phone
This tutorial will show you step by step how to unblock a blocked phone number on a Samsung phone.
Steps
1. Open the Phone app.

2. Tap on the ⋮ icon located next to the search icon (magnifying glass icon).

3. Tap on Settings.

4. Tap on Block numbers.

5. Tap next to the number you want to unblock on the - icon.

The phone number is now unblocked on your Samsung phone.
Maybe you're also interested in:
How to block a phone number on a Samsung phone
How to assign a ringtone to a contact on a Samsung phone