From the home screen, tap the Phone icon. Note: The message 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.
Tap the Menu icon.
Tap Blocked contacts.
To add a phone number or contact to your blocked list, tap the Add icon.
Tap the desired option. Note: This tutorial selects 'Add number'.
Enter the desired phone number, then tap OK.
To remove a blocked phone number or contact, touch and hold the desired entry.