Ключевые слова: adolescent, african, american, angle, app, application, black, browsing, carefree, cellphone, close up, communication, concentration, connection, device, diverse, friend, friends, friendship, fun, gadget, gather, internet, latin, lifestyle, low, male, media, men, mobile, multiethnic, multiracial, online, park, phone, serious, share, smart, smartphone, social, surfing, technology, teen, teenage, together, using, watch, young, youth,