The GSM/GPRS quad-band (850/900/1800/1900 MHz) world phone supports Roger's high-speed EDGE (Enhanced Data Rates for GSM Evolution) network for data transfer rates that average 135 kilobits per second (kbps). Cingular Wireless Treo 650 customers in the U.S. also benefit from EDGE.

Roger's also introduced a new hosted e-mail service called MyMail, which is due to launch next month for free to all data plan subscribers. MyMail delivers synchronized personal information management (calendar, contacts) and e-mail pushed to a cell phone or smartphone, including the Treo 650. For Enterprises, there's a server-based solution that sits behind a firewall.

The Treo 650 measures 4.4 x 2.3 x 0.9 inches and weighs about 6.3 ounces with an overall appearance similar to predecessor Treo 600. Treo 650's QWERTY thumb-keyboard, however, has a backlight and a more user-friendly design than the previous model, however. There's a Secure Digital slot for peripheral and memory expansion.

Unlike the Treo 600 and its 160 x 160 screen, the Treo 650 has a high-resolution 320 x 320 display; much better for reading documents and Web pages. The Treo 650 also integrates Bluetooth, a glaring omission in the Treo 600. Bluetooth lets Treo owners use wireless headsets and print to Bluetooth printers, for example.

As with the Treo 600, the Treo 650 includes a VGA camera for 640 x 480 or 352 x 288 pixel images. Its camera delivers takes better pictures and video in low-light situations, however.

Other Treo 650 features include a 312 MHz Intel XScale PXA270 processor and 32 MB of memory (23 MB useable). Since the memory is non-volatile, you won't lose data in the event the smartphone's removable battery drains.

For more on the Treo 650, see Review: palmOne Treo 650 - A Near Perfect Hybrid, where we review the Sprint, or CDMA, edition of the smartphone.