Ключевые слова: 20s, adult, alone, app, campus, candid, casual, caucasian, cellphone, college, communication, contemporary, copyspace, corridor, cropped, education, hallway, holding, indoor, indoors, inside, interior, interiors, internet, lifestyle, male, man, men, message, mobile, modern, natural, online, people, person, phone, reading, school, smartphone, sms, student, study, studying, technology, text, texting, typing, university, wireless, young,