1. From the home screen, tap Apps.
   Note: The call blocking feature may not affect phone calls made or received via third-party apps installed on your device. Please contact third party app developers for assistance with such applications.
   
2. Swipe to, then tap Settings.
   
3. Scroll to "Device", then tap Blocking mode.
   
4. Tap Blocking mode to enable the blocking.
   
5. While blocking mode is active, the Blocking Mode icon will be displayed in the notifications bar.
   
6. To configure blocking mode settings, from the home screen, tap Apps.
   
7. Tap Settings.
   
8. Scroll to "Device", then tap Blocking mode.
   
9. To set a start and end time for blocking mode, tap the Always checkbox.
   
10. Tap the From and To fields to set the desired start and end time for blocking mode.
    
11. To set allowed contacts, then tap Allowed contacts.
    
12. Tap the desired option, then follow the on-screen prompts to block contacts.
    
13. To add a desired contact to the block list, tap Custom.
    
14. Tapp the Add icon.
    
15. Select the desired contact.
    
16. The desired contact is now on your block list. To remove a contact, tap the Menu key..
    
17. Tap Delete.
    
18. Select the desired contact, then tap Delete.