As of 2011, Alltel does not provide a single-number call blocking service for Samsung or other cell phone models. However, subscribers may manage unwanted calls with existing features. A special code blocks individual texters. For voice calls, load up your contact list and restrict accepted calls to callers on that list. If the method proves too restrictive, attach a special ringtone to known unwanted callers. The tone warns you not to pick up the phone.
Compose a new text message. In the body, begin the message with the letter "B." Follow with the ten-digit mobile device number you wish to restrict.
Send the text to the number "8888".
Unblock the number in the future by substituting a "U" for the "B" in the message.
Restrict to Contacts
Select "Settings." Menu location varies slightly by phone model. On a Samsung MyShot phone, the menu appears once you click on the "Menu/OK" button. On a Messenger Touch phone, find it by pressing the "Menu" button and then selecting "Menu 1." The remainder of the phone's menu configuration remains similar across models.
Enter your phone's unlock code. Unless you previously reset the code, try the last four digits of the phone number.
Go to "Phone Settings," then "Security."
Choose "Restrictions," then "Calls." Opt for "Allow Contacts" to restrict accepted calls to only the numbers on your Contacts list.
Select "Contacts" from the phone menu. In some phones, there may be a separate contact menu accessible directly from the standby screen. Choose the unwanted contact from the list.
Choose "Edit," then "Ringtone."
Scroll through the ringtone list until you arrive at the desired sound. Touch the selected ringtone to associate the sound with the contact number.
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