smartphone face
n. A drooping jawline and saggy jowls caused by neck muscles that have been shortened from constantly looking down at a smartphone or similar device.
Nefertiti did not have to contend with 'smartphone face’, the term coined by cosmetic doctors to describe the shortening of the neck muscles and pull on the jowls caused by spending hours looking down at laptops, mobiles and iPads.
—Tanith Carey, “Would YOU try the no-knife neck lift to look as good as Helen Mirren?,” The Daily Mail, May 05, 2013
A new ailment, characterized by sagging jowls and a drooping jawline, has been dubbed "smartphone face." It comes from repeatedly bending forward to peer at a hand-held device, doctors say.
—Amber Sutherland, “'Phone face' woe,” The New York Post, May 17, 2012
2012 (earliest)
A 'smartphone face', as explained by Dr Mervyn Patterson of the Woodford Medical group, is a new condition caused by spending too much time looking down into your phone. "If you sit for hours with your head bent slightly forward, staring at your smartphone or laptop screen, you may shorten the neck muscles and increase the gravitational pull on the jowl area, leading to a drooping jawline."
—Lutphea Tory, “Your smartphone can make your face sag,” Priyo News, April 07, 2012