page_title: List of Palm OS devices
section_title: Treo
hierarchical_section_title: List of Palm OS devices / Handspring / Treo
caption_attribution_description: A Treo 300.
context_page_description: This is a list of Palm OS devices, and companies that make, or have made, them.
context_section_description: Smartphones (except 90)
  Treo 90—Palm OS 4.1H, can be updated to 4.1H3 which adds SDIO support
  Treo 180—Palm OS 3.5.2H
  Treo 180g—Palm OS 3.5.2H The Treo 180 with graffiti area, rather than a thumbboard
  Treo 270—Palm OS 3.5.2H
  Treo 300—Palm OS 3.5.2H6.2
  Treo 600—Palm OS 5.2.1H
caption: The Treo 300
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