Ключевые слова: advertising, app, application, background, black, blank, call, caucasian, cell, cellphone, cellular, close, closeup, communication, concept, connection, device, digital, display, electronic, empty, female, finger, gadget, hand, holding, internet, isolated, man, message, mobile, mock, mockup, modern, network, phone, portable, screen, showing, smart, smartphone, technology, telephone, touch, touchscreen, up, website, white, woman,