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.

You can block a phone number or contact on Android from the Phone app, your contacts list, recent calls log, and more. Here's how to do it.

To unblock a number on a Samsung Galaxy S10, open the settings menu in the Phone app and go to the Block numbers page.

How to hide your number on Android On Android, the name of specific settings may vary depending on which version of Android you're on and what brand of smartphone you're using.