The blackberry bold marks a new era for RIM, whose smartphones have traditionally been used mostly for business e-mail. The latest model, priced at $299.99 with a two-year service agreement from AT&T, boasts a new display, a redesigned user interface, a full HTML browser, and the best keypad we've seen on any smartphone. The exterior of the Bold isn't a radical departure from the BlackBerry Curve. It features the now-familiar trackball, which lets you scroll through the phone's user interface with ease. It's responsive, but it picks up dirt easily.
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