Sprint's new Any Mobile plan is a new feature of its Everything Data Plan.

http://anymobile.sprint.com/

Sprint describes Any Mobile as: you're free to call any mobike, anytime, on any network without worrying about the meter running. This is an amazing boon to heavy cell phone voice call users. Since many people consider their cell phone their primary phone, the Any Mobile plan provides what amounts to unlimited minutes for people who primarily speak to other cell phone users.

It wouldn't appeal much to me since I use laughably few voice call minutes per month. If I break 100 minutes per month, I'm surprised. But, if you're one of those cell phone gabbers (and you know who you are :-), this may be the plan for you.

Via TechVi