If you’re looking for the cheapest plan that offers the iPhone 4S (or iPhone 4), with unlimited data and text included, then check out the Sprint Everything Plus Referral Program. This is meant for friends of employees, but a Sprint executive has offered to refer us:
Sprint employee e-mail address: Russ.S.McGuire@Sprint.com
Last 3 digits of employee ID (CID): 383
Monthly plans start at $59.99 for individuals with 500 anytime minutes with unlimited text and data, which is $10 cheaper than their regular plans. Family shared plans start at $109.99 for two lines sharing 1600 minutes with unlimited text and data, which is $20 less than their regular price. You also get unlimited nights and weekends starting at 7pm.
However, Sprint adds on a “Premium data charge” of $10 a month for iPhones and other select smartphones. This brings the total to $69.99 a month for the 500 minutes individual plan. I don’t know of any carrier that offers all that for a lower price, but let me know in the comments if you do. In fact, only Sprint has unlimited data right now, and most others charge for texting separately.
Already in a contract? Check if you are eligible for a student or employee corporate discount, or 10-15% savings for being a credit union member. Finally, if you are an AAA member, Sprint should offer you a 10% discount on their regular retail plans if you call them and ask. You can apply these for a discount on your current plan, even in the middle of a contract.

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