Block or Unblock Messages

1. From the home screen, select the  Messages app. Select the desired message thread. 

2. Select the  Menu icon, then select People & options. 

3. Select Block. If desired, select the Report as spam checkbox to have the number reported to Google. Select OK to confirm. 

To remove a number from the Blocked numbers list, from the Messages app select the  Menu icon > Blocked contacts. Select UNBLOCK next to the desired contact or number.