Nothing, I just lost weight a few days ago (83 10), so don't worry about brushing the computer, the blackberry won't die! You go online to find a brushing tutorial. It seems difficult, but it's actually very simple, because you don't have to operate too many things yourself! Bring your own theme and ringtone, as well as voice dialing, PTT, TTY and other messy things can be clicked! You can install a lot of software after brushing. It's super cool to use two words