1.
BLOCK: From the home screen, select the
Phone app. Select the
Menu icon, then select
Settings.
![step 1](https://www.att.com/devicehowtomedia/image/nokia_3-1a/os9/9006146_01.jpg)
2. Select
Blocked numbers.
![step 2](https://www.att.com/devicehowtomedia/image/nokia_3-1a/os9/9006146_02.jpg)
3. Select
ADD A NUMBER. Enter the desired
phone number, then select
BLOCK.
![step 3](https://www.att.com/devicehowtomedia/image/nokia_3-1a/os9/9006146_03.jpg)
4.
UNBLOCK: To remove a number from the Blocked numbers list, select the
Remove icon beside the desired number then select
UNBLOCK.
![step 4](https://www.att.com/devicehowtomedia/image/nokia_3-1a/os9/9006146_04.jpg)