Can I use BoostMobile for iPhone 4s?

My iPhone is sprint but I don't want sprint's original plans because it's too expensive. I only call and I don't want text and data. I don't mind limited minutes.

What is the best way to do this? Does Boostmobile work?

You can get your Sprint iPhone 4S flashed to Boost Mobile. But I don't think Boost has Talk only plan, you'll have Talk & Text & Data plan and they're cheap, so why not use that when you've to pay for all. Anyways, you can mail this person (arghyle@rocketmail.com) who can help you get the phone flashed to Boost.