T-Mobile
The feisty company has made headlines recently with initiatives like "Binge On," which offers unlimited video streaming on services such as Netflix, HBO Go, and Sling TV - without it counting toward your data plan.
AT&T came in second in customer satisfaction, followed by Verizon and then Sprint.
T-Mobile CEO John Legere wrote an ecstatic blog post about the win, where he took the time to trash his rivals. "Honestly, beating AT&T and Verizon when it comes to caring about customers is like the Mets winning at little league."
T-Mobile has long been criticized for its sometimes-spotty reception. But a recent report from wireless analytics site Open Signal showed that T-Mobile's LTE network is catching up to AT&T and Verizon's. T-Mobile subscribers now have access to T-Mobile's LTE network 81% of the time, up from just 59% in February 2014. That's a huge improvement, and brings it near AT&T (around 82%) and Verizon (87%), though the T-Mobile network still doesn't have the reach of its rivals.
But J.D. Power's findings on customer satisfaction emphasize that it isn't just about coverage. T-Mobile has worked hard to bill itself as the "un-carrier," the one who puts effort into improving customer experience. And it seems to have worked.
Here is the chart from J.D. Power:
J.D. Power