Got a crazy person on your back and need to know how to block text messages on a Blackberry? Sadly, there’s no easy way to just block either SMS or MMS text from just one or more people, such as joke texts or forwards.

If so, you know how valuable a text-blocking feature is for a cell phone. you can prevent text messaging from selected contacts.

You could use the Firewall Option on your phone:

Options>Security Options>Firewall

Enable the firewall and check the box for “Except messages from” Contacts.

As long as she is not in your address book, they should be blocked