Blackberry handsets is an exact example of a convergent device, which has been developed by the Canadian company Research In Motion (RIM). Blackberry is known for delivering information over the wireless data networks of mobile phone service companies. Blackberry first was introduced in the market as a mobile device that could even help you in checking e-mails. The original Blackberry mobile had a monochrome display, but all current models have color displays. The Blackberry today include PDA applications too like address book, calendar, to-do lists, etc. along with telephone capabilities. The BlackBerry is today primarily known for its ability to send and receive e-mail wherever it detects a wireless network of certain cellular phone carriers. It has a built-in QWERTY keyboard, optimized for the use of only the thumbs to type. System navigation is primarily accomplished by a scroll ball which is in the middle of the device. Many Blackberry phones have been introduced by many networks providers. Know more about the Blackberry devices and become a fan of this fabulous device.