Sprint

Sprint will join T-Mobile and Verizon Wireless in abandoning the traditional two-year contract for selling smartphones by the end of 2015. The news comes via a new interview with Sprint CEO Marcelo Claure, who said the company will slowly move towards selling smartphones at full price via a leasing business model.

Sprint is already making the move to the new leasing model with today's reveal of iPhone Forever, which will allow customers to upgrade to a new version of Apple's smartphone at any time while keeping the same monthly lease rate.

T-Mobile has not offered two-year contracts for a couple of years now, and last week Verizon Wireless also ditched the contract model. This decision by Sprint means that AT&T will be the only one of the four major US carriers to still offer two-year contracts.

Source: Sprint