As high as 79 % of consumers use Smartphones while shopping and 85 % use smartphones in-store for shopping and the phones are used prior to the store visit. 65% of the Shoppers prefer Mobile Sites to Apps for shopping.

Smartphones are used to make purchase decisions across categories, including Appliances, Electronics and Grocery.
Smartphones users tend to shop more, the frequency of Shopping using Smartphones is linked to the higher value purchases. The infographic based on Google Shopping insights gives the purchases for each category and usage of Smartphones while shopping.

Source: Visually