To Nikir.......
One of the world's smallest smartphones packs all the power you expect from a BlackBerry® smartphone. BlackBerry® PearlTM 8100TM is the ultimate combination of brains and beauty. It features complete functionality, including:

+ Digital camera
+ Multimedia capabilities
+ Expandable memory
+ Organizer applications-including calendar
+ MemoPad
+ Tasks and Address book

BlackBerry® PearlTM 8100TM also offers email, web browser, instant messaging, SMS, MMS, and more. Next Generation User Interface with a 5-way navigating trackball helps users experience absolute flexibility while working on the go. Hope it will help you to decide.......take care n have fun