noun, noun or participle which takes 'suru'
texting while walking; using a smartphone while walking
Refers to the dangerous habit of looking at a smartphone screen while walking, often in public places.
See also: スマホ
駅で歩きスマホをしている人にぶつかりそうになった。
I almost bumped into someone who was texting while walking at the station.
歩
Using your smartphone while walking is dangerous, so let's stop doing it.