Ключевые слова: application, background, business, businessman, call, cellphone, closeup, communication, contact, design, device, digital, display, electronic, empty, equipment, finger, gadget, hand, hold, holding, information, internet, isolated, male, man, message, mobile, modern, network, online, person, phone, portable, screen, sensory, showing, smart, smartphone, social, tech, technology, telephone, touch, touchscreen, using, white, wireless,