1. From the home screen, tap the Phone icon.
   
2. Swipe down from the Notifications bar.
   
3. Tap Settings.
   
4. Scroll to, then tap Call Blocking.
   
5. Tap the desired switch to toggle on or off.
   
6. 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.