iPhone 5s

The latest smartphone consumer satisfaction survey from J.D. Power still shows the iPhone coming out with the highest marks on all four major U.S. carriers. The survey, which asks thousands of customers on AT&T, Sprint, T-Mobile and Verizon about their satisfaction with their current smartphone, was conducted between September 2013 and February 2014. Across all four carriers, Apple's devices came out on top with high scores — 850, 857, 853 and 849 on AT&T, Sprint, T-Mobile and Verizon, respectively, on a 1000-point scale.

Samsung devices came up close behind Apple on all four carriers, but still fell somewhere between 1 and 5 points behind the iPhone. Both Apple and Samsung beat the average satisfaction of phone customers on each carrier by a solid margin, with Apple as high as 20 points over the average in the case of customers on Verizon. The survey notes that an increasing number of people still place "price" as a driving factor in their smartphone purchase, making the overall preference of iPhones even more impressive.

Source: J.D. Power