How big retailers measure up on mobile response time (in seconds)
RetaileriPhone (3 carriers)
Blockbuster.com4.75
BarnesandNoble.com5.06
Williams-Sonoma.com5.10
Rakuten.com5.15
Office Depot.com5.94
Amazon.com6.20
OfficeMax.com6.98
JCPenney.com7.08
Overstock.com7.09
Drugstore.com7.39
Sears.com7.47
VictoriasSecret.com7.58
Symantec.com8.11
HSN.com8.14
HomeDepot.com10.08
Target.com10.15
Cabelas.com10.18
Newegg.com10.18
Dell.com10.41
BestBuy.com10.42
Average7.67

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.