Over-the-shoulder view of a person holding a smartphone while watching a makeup tutorial video, showing a woman applying eye makeup on the phone screen.
FILE – In this Nov. 1, 2018 photo, Laurel Foster looks at Instagram in San Francisco. App developers say as teens scroll through Instagram and Snapchat, tap out texts, or hole up in their rooms watching YouTube, they’re leaving enormous digital footprints that may offer clues to their psyches. Studies are under way to find out. (AP Photo/Haven Daley)

MENDOCINO CO., 1/8/25 – Teens spend more than an hour on smartphones on average during school, according to a study published Monday in the Journal of the American Medical Association.

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