[luckyno13]

Im not sure about the old RAZR specifically, but there are still a number of feature phones available that not only will provide similar battery life you are talking about, but also require a much cheaper plan.

But as a real estate agent, he is probably leveraging other uses from his smartphone that would make this an unattractive option. I guess it would either be carry a smartphone and a feature phone, or a smartphone with some spare batteries.