I currently have an iPhone 4S and 5 with Sprint. With my wife, we are on a 1500 minute plan and it costs $140 per month. As compared to my pre-iPhone, pre-data days, this is twice as much as I used to pay. Any helpful suggestions on how to get these costs down? I'm considering going to 500 any time minutes as I don't think we exceed that. Is there any other service that would be compatible with these Sprint version iPhones that would be less expensive? If the savings were significant, I'd be willing to ditch these phones and buy new iPhones to make other options available. Thanks!