What is the real difference between 002 / 003

[Scrappy xyz]

I have an 002 & my gf has a 003. what is the real difference between these phones?
003 She hates her battery life (will die overnight ona full charge) & has a text message scrolling option (she cant scroll up to past messages, will always snap back to the bottom)

002 I dont have many issues, my battery life is 8-10 hrs with moderate use & only had 1 issue with waking up to a dead phone with a full charge.