Per hayden, from blackberry
As BlackBerry smartphone users type, a list of word options is displayed when the BlackBerry smartphone user pauses. The vertical list consists of word selections that are the closest match to the word the BlackBerry smartphone user is trying to type. The BlackBerry smartphone user may then select the word.
BlackBerry smartphone users may now scroll to a word they want to correct and move between specific letters by rolling the trackball up or down to flip between letters.
Improved Frequency Learning
Commonly used words are recognized with greater consistency.
once the 8100 gets the 4.3 update, they will both type the same