Ключевые слова: addiction, business, closeup, communication, device, digital, display, electronic, end part, end part of the phone, finger, fingers, gadget, goes out, hands, holds, information, isolated, lifestyle, lights up, lower blue light, man, mobile, mobile phone, modern, movement, online, out of focus, phone, poke, screen, side of the phone, single, smart, smartphone, technology, touch, use, wireless, work,