How do pedestrians stop their mobile phones when crossing the crosswalk?

Pedestrians should watch their mobile phones when crossing the crosswalk, and try not to stop pedestrians from walking or disturb them, because, uh-huh, when people are most tired of paying attention to one thing again, someone will disturb us rashly, so we should respect his choice. If a city with conditions can install a row of reflective lights on the sidewalk when pedestrians cross the street, it will stimulate some people not to play mobile phones when crossing the crosswalk.