The Treo 270 is a dual-band GSM flip form factor smartphone

Smartphone

A smartphone is a high-end mobile phone built on a mobile computing platform, with more advanced computing ability and connectivity than a contemporary feature phone. The first smartphones were devices that mainly combined the functions of a personal digital assistant and a mobile phone or camera...

 made by Handspring

Handspring (company)

Handspring was a maker of Palm OS-based Visor- and Treo-branded personal digital assistants. It was run by Jeff Hawkins, Donna Dubinsky, and Ed Colligan, the original inventors of the Palm Pilot and founders of Palm Computing, after they became unhappy with the direction in which 3Com was taking...

. Released on May 31, 2002 for $499 with service contract, $699 without service contract, it was the fourth device in the Treo

Treo

The Palm Treo is a line of smartphones originally developed by Handspring, which was bought by Palm, Inc. They are now manufactured and maintained by Palm, Inc. Treos have a number of integrated features such as the ability to check the calendar while talking on the phone, dial directly from a...

 family. It features a full keyboard and shipped with Palm OS

Palm OS

Palm OS is a mobile operating system initially developed by Palm, Inc., for personal digital assistants in 1996. Palm OS is designed for ease of use with a touchscreen-based graphical user interface. It is provided with a suite of basic applications for personal information management...

version 3.5.2H. The 270 has a 160×160 color screen, 16 MB of internal memory and a 33 MHz DragonBall CPU.

During its development, the Treo 270 was codenamed "Atlanta".