You might not remember this, but the now defunct Palm acquired Handspring in June of 2003, and this phone was a key reason why. The Treo 180 was a breakthrough because it elegantly combined a PDA and phone in a slim design with a full keyboard. The hybrid made competing devices like the Kyocera QCP-6035 look like a brick by comparison. The flip-up cover with clear plastic window was another really nice touch, making it easy to cradle the phone against your face when gabbing. The follow-up version, the Treo 270, would add a color screen.