America’s largest cellphone carrier is also benefitting from brisk iPhone sales, which began operating on its network a year and a half ago. Verizon, like its competitor AT&T, heavily subsidizes iPhone sales for customers who sign a two-year contract, and the company hopes to make that money back and more over the course of those two years. For wireless carriers, however, the real goal is to get each user to spend more per month on their services, and Verizon has recently made some headway in this department as well — increasing revenue per user by 3.6% during the most recently reported quarter.