1.
BLOCK: From the home screen, select the
Messaging app. Select the desiredÂ
message thread.Â
![step 1](https://www.att.com/devicehowtomedia/image/att_radiant_core/9006146_01.jpg)
2. Select theÂ
Menu icon, then selectÂ
People & options.Â
![step 2](https://www.att.com/devicehowtomedia/image/att_radiant_core/9006146_02.jpg)
3. SelectÂ
Block. SelectÂ
OKÂ to confirm.Â
![step 3](https://www.att.com/devicehowtomedia/image/att_radiant_core/9006146_03.jpg)
4.
UNBLOCK: To remove a number from the Blocked numbers list, from the Messaging app select theÂ
Menu icon >Â
Blocked contacts. SelectÂ
UNBLOCK next to the desiredÂ
number.Â
![step 4](https://www.att.com/devicehowtomedia/image/att_radiant_core/9006146_04.jpg)