J.D. Power ranks iPhone No. 1 for customer satisfaction at all four U.S. carriers Posted on Thursday, April 24th, 2014 at 6:12 am. PTWritten by Jim DalrympleIt would be great to win best in customer satisfaction at one or two carrier, but all four is beyond impressive.Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment *Name * Email * Website Save my name, email, and website in this browser for the next time I comment.