J.D. Power and Associates is out with the second half of its 2012 “U.S. Wireless Network Quality Performance Study”, and Verizon once again come out on top for network performance in five of the six regions included in the report. Only second to U.S. Cellular in the North Central region, Verizon posted the best overall network performance among the other carriers in the remaining regions based on 10 key problem areas that could impact the customer experience.

For a 16th consecutive reporting period, Verizon Wireless ranks highest in the Northeast region. Verizon Wireless achieves fewer customer-reported problems with dropped calls, initial connections, transmission failures and late text messages, compared with the regional average. Verizon Wireless also ranks highest in the Mid-Atlantic, Southeast, Southwest and West regions… U.S. Cellular ranks highest in the North Central region for a 14th consecutive reporting period. Compared with the regional average, U.S. Cellular has fewer customer-reported problems with dropped calls, failed initial connections, audio problems, failed voice mails and lost calls.

The study also covered the customer experience specifically for data-related problems. Not surprisingly, LTE device users experienced significantly less issues than older 3G devices like the iPhone:

The study finds that the number of data-related problems, especially those related to slow connection speeds, is significantly lower among customers using 4G LTE-enabled devices than among those using devices with older 3G/4G technology standards, such as WiMAX and HSPA+… For example, among customers with 4G LTE-enabled devices, the problem incidence for excessively slow mobile Web loading is 15 PP100, compared with the industry average of 20 PP100. Furthermore, the overall problem incidence for excessively slow mobile Web loading is even higher among customers with WiMAX and HSPA+ technology

Based on responses from over 26,000 U.S. wireless customers, the report explained how network performance was calculated:

Overall network performance is based on 10 problem areas that affect the customer experience (in order of importance): dropped calls; calls not connected; audio issues; failed/late voicemails; lost calls; text transmission failures; late text message notifications; Web connection errors; email connection errors; and slow downloads. Network performance issues are measured as problems per 100 (PP100) network connections, with a lower score reflecting fewer problems and better network performance. Carrier performance is examined in six geographic regions: Northeast; Mid-Atlantic; Southeast; North Central; Southwest; and West.