BlackBerry
BlackBerry® 8820 is a "dual-mode" handset that acts as a regular cellphone but also allows users to connect to the Internet through a wi-fi connection at home or at "hotspots." When connected to the Internet, users can make phone calls, send e-mails or browse the Web. It is full of convenient features such as voice dialing, speakerphone, and Bluetooth. The BlackBerry 8820 is a quad-band GSM/GPRS and EDGE-enabled smartphone that provides global wireless voice and data capabilities with best-in-class performance. This device is an extraordinary business phone for people who really care about mobile communications and productivity.
The communication between the cell phone and a cell phone directory can be established via web browser. Also the screen size is fair, so attempting to lookup cell phone numbers is easy.