Satisfaction with a carrier's customer care service is higher among wireless customers subscribing to data-sharing service plans1 than it is among those subscribing to more traditional service and data plans, according to the J.D. Power and Associates 2013 U.S. Wireless Customer Care Full-Service Performance StudySM--Volume 1 and the 2013 U.S. Wireless Customer Care Non-Contract Performance StudySM--Volume 1, both released today. More