New research from Nielsen reveals that 29 percent of smart phone owners use their phone for shopping-related activities.
And one big difference between how smart phones get used, compared to PCs, is that people use their mobile devices while they are in stores, in the process of shopping.
Retailers might not always appreciate that face, since users often are comparing prices at online or other physical locations.
But people also appear to be checking product review while in stores.
Top activities among mobile shoppers include in-store price comparisons (38 percent of mobile shoppers), browsing products through their mobile Web or apps (38 percent h) and reading online product reviews (32 percent).
Apps, which account for the majority of mobile phone time in the U.S., may be the key to shifting consumers from browsing products on their phone to making purchases on the spot.
Although only nine percent of mobile shoppers have used their phone to pay at the register, the desire to do so is apparent, says Nielsen.
Some 71 percent of app downloaders would be interested in an app that allows them to use their phone as a credit card.
Apple iPhone users are more interested in this option than Android users, with over a third (39 percent) saying they would be extremely or very interested in an app with this ability.