When it comes to smartphone satisfaction, carriers are key. That's the central finding of J.D. Power, which Thursday released its latest study indicating Apple and Samsung lead in satisfaction across all four major U.S. providers.
When it comes to the iPhone, customers of long-time Apple partners Verizon and AT&T love the Cupertino, Cupertino, company's smartphone lineup, more than any other smartphone brand.
As for South Korean Samsung, Sprint customers report are most satisfied by the Galaxy family of smartphones. Which U.S. carriers do the best job supporting smartphones? According to the study, AT&T and Sprint report the greatest satisfaction, followed by T-Mobile and Verizon Wireless...