Millennials, we’re assured by endless headlines, are the people most addicted to their devices. Addled by social networking, obsessed with taking selfies and hustling for likes, youngsters can’t put their damn phones down. Amirite? Nope. That is wrong. The data suggests that the ones most hooked on their devices are those graying GenXers. Research by Nielsen, for example, found that Americans aged 35 to 49 used social media 40 minutes more each week than those aged 18 to 34.