Ключевые слова: activity, addiction, advertise, app, background, black, blank, bright, business, call, cellphone, communication, contact, dark, device, digital, display, electronic, email, equipment, eyesight, gadget, grip, hand, hold, information, internet, isolated, light, male, man, media, message, mobile, modern, network, online, phone, portrait, screen, search, smart, technology, telephone, text, texting, time, touch, white,