Steve needs to upgrade from his old BlackBerry and he wants to know how he can export and save his text messages. Leo says it's possible to save text messages via SIM, but the SIM is very small. He could back up the text messages with the BlackBerry software, as well as third party solutions, but whether they will be legally viable after that is another story. Which is why Leo would recommend keeping the phone and sim as is and get a new SIM for the new phone.
Pleasant Solutions has a program for saving text messages in a manner that's best for court/legal solutions. It's called Berry Extract and it's $35.