Learn how to block calls on the Google Nexus 4.
Block calls from a number
To block incoming calls from a number, follow these steps:
Note: To block any incoming call that is not added to the reject list, touch the red Phone icon and drag it to the left. To block the call but provide a message, touch Reject call with message and drag up.
Unblock a number
To allow incoming calls from a number you previously blocked, follow these steps: