Ключевые слова: app, application, background, black, blank, business, caucasian, cellphone, closeup, communication, connection, design, device, digital, display, electronic, empty, female, finger, gadget, gesture, hands, holding, information, internet, isolated, media, message, mobile, mock, mockup, modern, new, phone, screen, showing, slide, smart, smartphone, space, technology, telephone, touch, touchscreen, up, using, white, wireless, yellow,