The Blackberry 8100 is GSM Quadband Smartphone with frequencies of 850 / 900 / 1800 / 1900. This phone will work with any gsm carrier any where in the world. Its QWERTY keyboard gives you the ability to text / e-mail quickly. You can pop in a microsd memory card to expand its memory. GPRS / EDGE and a HTML browser gives you the ability to access the web smoothly. Built in bluetooth gives you the ability to use a bluetooth headset. 1.3Mp Camera with led flash lets you snap nice crips pictures where ever you are. You also get a build in media player & Document viewer to access your Powerpoint, PDF, Excel and Word files on the Go. The battery last up to 360 hours for stand by and 3 and 1/2 hours of talk time.