Top 5 in mobile performance for June

Rank  Retailer Average Response Time (seconds) Average Availability (%) Average Consistency (seconds)
1  Blockbuster.com 3.98 99.44% 5.48
2  Sears.com 2.63 98.74% 3.81
3  BarnesandNoble.com 4.75 99.33% 7.73
4  Williams-Sonoma.com 5.16 99.08% 6.44
5  Rakuten.com 5.62 99.36% 8.40

Gomez collected iPhone measurements for mobile sites on the following carriers: AT&T, Sprint and Verizon Wireless. Gomez measured response time as the end-to-end time elapsed while downloading each mobile site.