How to block and unblock numbers from the Samsung Contacts app Samsung’s Contacts app is the simplest way to block (and unblock) phone numbers using your Samsung handset.

However, you may sometimes need to review your blocked numbers list, for example, if you accidentally blocked a legitimate number or if you want to unblock a number.

This will show you the list of blocked contacts. How to Unblock a Number on Android If you need to unblock a number, follow these steps: Open the Phone app and go to Settings. Select Blocked numbers.