Of course, this extra size isn't for naught. The 7750 sports an enormous 3-inch-diagonal display that supports 65,536 colors. In BlackBerry-speak, that translates into a display that shows four rows of icons instead of three. And while we appreciate the size of the display, which makes it easy to read e-mail and surf the wireless Web, the screen wasn't very bright. Even with its backlight set on high, the display doesn't necessarily pop as much as the 7100t's does.
Similar to more traditional BlackBerry devices, the 7750 provides a mini-QWERTY keyboard that is actually easy to use. Firing off e-mail messages, navigating to Web pages, and entering alphanumeric data is easy to do with your thumbs. Typing special characters require first pushing the SYM key, which accesses a screen with the necessary options. This, however, is merely a learning-curve issue that users will quickly overcome.
Dialing a number can be done in one of two ways. Using the scrollwheel on the handset's right side, you can highlight, then activate the Phone icon. This brings you to the Phone interface, in which the left-hand side of the keyboard behaves like a more traditional number pad. Type in the number you wish to call, then hit the Return key. If that involves more fumbling around than you'd like, hitting the Phone-mode quick-launch button above the scrollwheel automatically takes you to the Phone interface.
In addition to the aforementioned scrollwheel and Phone-Mode shortcut key, you'll also find a Back button (which you press to end a call) on the right side of the handset. On the bottom of the unit, you'll find the IR port and a port for a USB cable/charger. The 2.5mm jack for the headset resides on device's top.The RIM BlackBerry 7750's phone book can hold more than a thousand entries, but actual size is dependent on the available memory. Other features include text messaging, a calendar, a calculator, a task list, USB support, a memo pad, an alarm clock, a game (Jawbreaker), three-way calling, a vibrate mode, and 20 polyphonic ring tones.