Ключевые слова: boy, cell, cellphone, chatting, class, classmates, classroom, college, communicate, communication, device, education, female, friends, gadget, girl, group, high, hispanic, internet, lesson, lifestyle, male, men, messaging, mobile, network, networking, online, people, phone, professor, school, sitting, smart, smartphone, social, student, study, studying, surfing, teacher, technology, teenagers, telephone, university, user, using, woman, young,