Cell Phone for the Blind?

brigc writes: "Here's one that's got me stumped. A friend of mine, who's blind, has asked me for help in tracking down a cell phone for him. He's interested in a flip phone with well-defined separations between the keys, and as much voice control as is possible... dialing, etc. Battery life is the only other thing he mentioned. Preferably something that would work on ATT's network in the US. We spent a piece of the afternoon in a local ATT store checking out all the flip phones they had and didn't find one he really loved. Anyone have any ideas? ...brig"