Swelling the Blackberry Curve's already formidable arsenal of telephonic and connectivity tools, the titanium Blackberry 8310 Curve now adds an internal GPS receiver with support for TeleNav GPS Navigator software and push-to-talk (PTT) capability--an AT&T exclusive. An amalgam of the svelte BlackBerry Pearl and the more business-oriented 8800, the 8310 Curve is the smallest, lightest BlackBerry phone that includes a full QWERTY keyboard. And it combines RIM's long-valued push email and messaging platform with a host of advanced multimedia features, including a 2-megapixel camera and stereo Bluetooth (for listening to music via wireless headphones). This quadband phone operates on GSM 850/900/1800/1900 networks and can handle high-speed data connectivity via AT&T's EDGE network, with availability in more than 13,000 US cities and along some 40,000 miles of major highways. It also offers global voice roaming in over 190 and data roaming in over 130 countries. The BlackBerry 8310 Curve weighs 3.9 ounces and measures 4.2 x 2.4 x 0.6 inches. Its 1100 mAh lithium-ion battery is rated at up to 4 hours of talk time, and up to 408 hours (17 days) of digital standby time. It runs on the 850/900/1800/1900 GSM/GPRS/EDGE frequencies.