Which wireless carrier you recommend below $50?

I have Sprint service right now and the contract is expiring in Feb. I have iphone 4s with SIM card.So, I can switch to any GSM service too. I'm not a heavy data user (may be 500MB a month ) and use only approx. 700 minutes with text. Which wireless carrier you recommend? Suggest something below $50.

Check out prepaid wireless service provider Ting Wireless. They work over the AT&T GSM network.

If you don't want to use any local companies, I would highly recommend going for T-mobile. One reason being you can get GSM phones and also there network is definitely better than sprints. Lastly they do not require contracts anymore! Trust me it makes a big difference. But anyway they are really reasonable too, so for Unlimited Talk and Text and 500mb of 4g network and unlimited 3G after you reached 500 MB of 4g networks. So Technically unlimited data to is for 50$ without tax. But overall its a great company with great network and plans heres a link to there website. Also keep in mind even though your phone is GSM compatible, make sure that you get it unlocked from Sprint. They can still have there own policy lock on it. So make sure to get it unlocked. Other than that heres the link:

http://www.t-mobile.com/...idual.html

Hope this helps!

Simple Mobile has really good plans starting at 40$ per month. Has unlimited everything and really good call service never drops a call