J.D. Power has released its 2013 U.S. Wireless Smartphone Satisfaction Study, volume 2, which has some interesting results. Apple and Samsung were among the leaders of the report.

According to the report, the two companies “are the only smartphone brands to achieve overall satisfaction scores that are at or above the study average in all four performance factors.”

However, the BlackBerry Z10 was still found to have performed particularly well with US tier 1 wireless carriers, which includes AT&T, Sprint, T-Mobile and Verizon Wireless.

The J.D. Power report is “based on experiences evaluated by 16,421 smartphone customers who have owned their current smartphone device less than one year and who are customers of the four Tier 1 carriers. The study was fielded between February and August 2013. The study measures customer satisfaction in four factors: performance (33%); physical design (23%); features (22%); and ease of operation (22%).”