Quite simply I dont think I could have managed without it. Heres a run down of the features
Phone Book: Your usual phone number storing, but this time you can store upto 100 numbers. Other new features include send business card, which in other words means you can forward phone numbers to other people.
Messages: The usual text messaging but can send up to 200 characters.
Tones: Loads of different tones and space for new ones
Games: Snake, and pairs are the best games.
Clock: Speaks for itself. You can set alarm as well
All this with the usual phone features make this an excellent phone to have