The conversion between PDA and mobile phone technology continues its inexorable march, with Handspring launching the Treo 180 and 180g communicator, combining handheld functionality with Internet browsing and text messaging. Certified for use on the Vodaphone and Optus networks, the devices integrate a dual-band GSM radio module for voice and data communication. Users can also surf the Web using the Blazer browser. The Treo 180 features a built-in thumb keyboard to input text, while the 180g incorporates the traditional Graffiti functions of the Palm OS. Size and weight were key drivers in the design of the device, which is about the size of a deck of cards. The communicators carry a retail price of $1,399, but are also available on a payment plan starting at $229.www.handspring australia.com.