The numbers don’t lie. One in 10 people accessed the Web from their mobile device—a 153 percent increase from last year, according to a new report from Walker Sands Communications. According to the firm, 87 percent of mobile traffic originates from smartphones. “Companies think only the most sophisticated consumers are browsing on a smartphone,” said John Fairley, director of digital services for Walker Sands. “Our study shows that across every industry, even traditional ones like construction, manufacturing, and logistics, mobile now accounts for a statistically significant percentage of all website traffic.” Here’s a breakdown by device, compared with the third quarter of 2010: • iPhone: 32 percent of traffic, down from 53 percent • Android: 42 percent of total mobile traffic, up from 22 percent • BlackBerry: 4 percent, down from 10 percent • iPad: 13 percent, up from 8 percent Here’s a step-by-step guide to determine how much of your website traffic comes from mobile devices.