The Palm Treo (stylized as Trēo) is a discontinued line of

smartphone A smartphone is a portable computer device that combines mobile telephone and computing functions into one unit. They are distinguished from feature phones by their stronger hardware capabilities and extensive mobile operating systems, whic ...

s originally developed by

Handspring Handspring may refer to: *Handspring (company), a company that made personal digital assistants *Handspring (gymnastics), a gymnastics move involving forward or backward rotation of the body *Rising handspring or nip-up A nip-up is an acrobatic ...

, which was bought by

Palm, Inc. Palm, Inc. was an American company that specialized in manufacturing personal digital assistants (PDAs) and various other electronics. They were the designer of the PalmPilot, the first PDA successfully marketed worldwide, as well as the Treo 6 ...

They were then manufactured and maintained by Palm, Inc. Treos had a number of integrated features such as the ability to check the calendar while talking on the phone, dial directly from a list of contacts, and send

email Electronic mail (email or e-mail) is a method of exchanging messages ("mail") between people using electronic devices. Email was thus conceived as the electronic ( digital) version of, or counterpart to, mail, at a time when "mail" mean ...

messages. The final models included a built-in camera. Treos ran

Palm OS Palm OS (also known as Garnet OS) was a mobile operating system initially developed by Palm, Inc., for personal digital assistants (PDAs) in 1996. Palm OS was designed for ease of use with a touchscreen-based graphical user interface. It is pro ...

, but later models also ran

Windows Mobile Windows Mobile is a discontinued family of mobile operating systems developed by Microsoft for smartphones and personal digital assistants. Its origin dated back to Windows CE in 1996, though Windows Mobile itself first appeared in 2000 as Pock ...

. The

Palm Pre The Palm Pre , styled as palm prē, is a multitasking smartphone that was designed and marketed by Palm with a multi-touch screen and a sliding keyboard. The smartphone was the first to use Palm's Linux-based mobile operating system, webOS. Th ...

, released in June 2009, replaced the Treo series.

Treo devices

A total of nineteen Treo models were released, listed below in reverse chronological order. Treos through the 680 series used

. Beginning with the 700 series, Treos ran both

and

. The

Treo 700w The Palm (PDA), Palm Treo 700w is a Windows Mobile-powered smartphone that was officially announced on September 26, 2005. As Palm, Inc., Palm's first Windows Mobile-powered Palm Treo, Treo, the 700w offered an alternative for users who want or nee ...

was the first of the 700 line, and the first Treo to use

. On August 19, 2008, Palm released the last Treo device, the

Treo Pro The Palm Treo Pro is a combination PDA/cell phone offered in both GSM and CDMA. It is Palm's fourth Windows Mobile Treo. It replaced the short-lived Sprint Treo 800w. Specifications The phone originally was released in an unlocked GSM format ...

on GSM. The Treo Pro on CDMA began sales in March 2009. :''Officially announced models'':

References

{{Authority control Palm mobile phones Mobile phones with an integrated hardware keyboard