This helpful video explains how to use letters when dialing on a Blackberry. Many companies have words in their phone numbers so Darci Larocque shows us how to dial those letters. All you have to do is go to the call log, and hold the key in, and type in whatever word you are trying to dial. She also shows us another tip: if you are calling an office and you need to enter in someone's last name, you can do that the same way. Blackberry users should definitely view this video.