The Motorola F3 has been selling at this price point for a year I believe - http://en.wikipedia.org/wiki/Motorola_FONE_F3
You can pick up pay as you go Nokia S40's for £20 or so these days too.
The tricky part is designing a UI for illiterate users.
You can pick up pay as you go Nokia S40's for £20 or so these days too.
The tricky part is designing a UI for illiterate users.
I bought one for $40. The calls sound clear, the battery lasts for 5+ days, and you can run over it in a car without breaking it.