Online shoppers in Hawaii and Alaska using mobile devices accounted for 26.6 percent of each state’s Cyber Monday buying, well above the 18 percent national average, according to a report released today.

The Adobe Digital Index of online shopping analyzed nearly 900 million visits to 2,000 retail websites on Cyber Monday as well as more than 3 billion visits since Thanksgiving Day.

Cyber Monday sales in the U.S. reached $2.29 billion, a year-over-year increase of 16 percent, and 18.3 percent of those sales were derived from mobile devices, 80 percent more than in 2012.

Hawaii shoppers accounted for 0.3 percent, or $7.7 million, of the total nationwide online sales.

About $419 million of online sales were made via mobile devices such as smartphones and tablets, and of that figure, mobile device-wielding Hawaii shoppers bought just over $2 million worth of merchandise. Nearly half of the purchases, or 45.5 percent, were made on devices using the iOS operating system, Adobe said.