University of California, San Francisco investigators measured smartphone app activity during school hours among US ...

Social media apps like Instagram, TikTok and Snapchat accounted for the greatest share of smartphone use during school hours, ...

Teens spend more than an hour on smartphones on average during school, according to a study published Monday in the Journal ...

Teens spent an average of about five hours on their smartphones per day, nearly two hours of which was spent on social media.

U.S. adolescents spend more than one hour per day on smartphones during school hours, with social media accounting for the ...

Social media apps are the main content. The effect of state laws governing phone use at school “remains to be seen,” a study ...

"Even during school hours, smartphones remain a major part of adolescents' daily lives," Nagata added. "Smartphones can ...

New tracking data finds teens spend over an hour on phones during school hours. Social media leads, and heavier “problematic ...

The study found that teens spent most of their time on social media apps, with Instagram, TikTok and Snapchat at the top in ...

This study found that U.S. adolescents, on average, spent more than an hour using smartphones during school, with social media use accounting for most of that time. These objective findings from a ...

US high schoolers between the ages of 13 and 18 spend more than an hour per day on phones during school hours, according to ...