Nearly 30 percent of Amazon users access the site exclusively on their phones. In 2012, perhaps five to eight percent of Amazon's total sales were made from mobiles, representing perhaps $3 billion to $5 billion worth of sales volume. Fully 55 percent of all time spent with online retail in June 2013 occurred on a mobile device, comScore says.
In the United States, in March 2014, about 71 percent of time spent at Amazon.com originated from a mobile device, comScore also says. That is the same percentage of mobile time spent as seen at eBay, and trails only the 99 percent figure for Apple sites.
Smartphones accounted for 44 percent of retail Internet minutes while tablets accounted for 11 percent.
