HOW THE SMARTPHONE KILLED THE WEEKEND. “A three-day weekend? We can barely get through three waking hours without working, new research shows. The average smartphone user checks his or her device 150 times per day, or about once every six minutes. Meanwhile, government data from 2011 says 35 percent of us work on weekends, and those who do average five hours of labor, often without compensation — or even a thank you. The other 65 percent were probably too busy to answer surveyors’ questions.”