A few weeks back T-Mobile announced a new upgrade offer for the iPhone, customers who purchase an iPhone 6 now and want to upgrade to the iPhone 6s when it arrives will be able to move up for free and they’ll also lock in the $15 per month price that T-Mobile is offering for iPhone 6 with a trade-in. Sprint announced a similar plan today called iPhone Forever that allows customers to purchase a new iPhone for $15 per month.

Sprint is calling all new and existing customers who are upgrade eligible to bring in a smartphone and get a 16GB iPhone 6 for $15 per month, when the iPhone 6s arrives next month those customers can upgrade to the new iPhone can keep their $15 price.

The carrier is offering this special pricing to customers who take advantage of this promotion by December 31st, if an upgrade is not made by then the customers would then have to pay $22 per month instead of $15.

Customers who are stuck on a contract with another carrier can get in on the action as well because Sprint has a running promotion to pay off their old phone and contract so that they can easily switch.

Sprint is certainly banking on the generous amounts of customers that new iPhones bring in and like T-Mobile it’s hoping that a special rate will entice customers enough to pick one up from them instead of a rival carrier.

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