It's a Kyocera MARBL running on Virgin Mobile. The handset was $29. There's no contract, the airtime is prepaid. It's the cheapest, most plastic phone I've ever owned and Foneshow works great on it. Smart phones are less than 5% of the US market. While the big part of the cellular market isn't quite as cheap as the MARBL, demoing that your product works on the least common denominator of device really gets the point across that what we're building is a product for the mass market.
As a demo phone, it's great. It's got a good speakerphone. It's got an easy to access SMS client. As on all phones dialing a phone number embedded in a text message is merely a matter of pressing the send button.