The Treo 180 is a dual-band GSM 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 in 2002, it was the second 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, and the first with phone capabilities.

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 180 has a 160x160 monochrome screen, 16 MB of internal memory and a 33 MHz Dragonball CPU. Two main models were produced, the 180 with a thumb-type keyboard and the 180g

Treo 180g

The Treo 180g is a dual-band GSM smartphone made by Handspring. Released in 2002, it was the third device in the Treo family. The 180g is essentially the same as its predecessor, the Treo 180, except that it uses Palm's proprietary Graffiti handwriting recognition software.It features a Graffiti...

 which used the Graffiti

Graffiti (Palm OS)

Graffiti is an essentially single-stroke shorthand handwriting recognition system used in PDAs based on the Palm OS. Graffiti was originally written by Palm, Inc...

handwriting recognition software, both were flip form factor.