Just did some math on the new sprint "iphone forever" trade in. Unless I'm missing something it looks pretty appealing.
First off, you need to be in an area where Sprint is good...I know they're probably the 2nd to least or least preferred carrier, but my wife has no issues with them at all, and they're the best priced...so as long as you're good with Sprint, this appears to makes sense.
For unlimited text, talk and data; you'll be paying $60/month. For an additional $22/month, you lease the phone and are able to upgrade for free when a new phone comes out.
To really find out if it's worth it, you need to figure out what the cost would be if you purchased the phone outright ($649) unlocked through apple. Assuming you did that, and wanted to sell it after a year, you can probably get about $439 for it on ebay (about $400 after fees). So your cost of carrying the phone for a year is $20.75/month. Really a negligible difference of a buck or so a month and you get to automatically upgrade without going through all of the selling hassle.
Plus, if you trade in your smart phone now, the $22/month gets reduce to $15 for the first 22 months.
All these #s are for the 16GB 6s....the plan goes up $5/month for the 64GB, but obviously so would the sale price of the phone, so there's a correlation there
Am I missing anything