What phone should my old man get?

[Curb71]

My dad is almost 70 but he wants to text but can barely figure it out with the phone he has. he has a regular sprint phone with a numberpad only. I've tried showing him word mode but he just cant get it. whats a good sprint phone for sms that is super easy for him to use when all he needs it for is calling and texting? something with a keypad with big buttons and if it had a button that does voice to text like my evo does for sms that would be even better. It would almost have to be a sprint phone. android would be a plus. but something like a blackberry has to small of keys for his big fingers.