Treo 180
From TreoCentral
The original Treo model. With a black and white screen and a flip-top design, this was the first truly pocketable PalmOS Smartphone. Marketed as a world phone, it had a dual-band GSM (900/1900 MHz) radio supporting both voice, web browsing, and SMS. Though it came with a keyboard we'd all recognize today, it was also offered with Graffiti as the Treo 180g. It remains the only Treo to have such a feature. One of its most innovative features was the Ringer switch, a physical switch on the top of the phone that would turn the ringer on or off.
