Ключевые слова: black screen, blank, blank screen, business, businessman, closeup, coffee, coffee break, coffee cup, communication, connection, device, digital, digital technology, display, gadget, hand, internet, mobile, mobile communication, mobile phone, mockup, modern, office, portable, screen, smart device, smartphone, technology, touch screen, touchscreen, using, wireless, wooden background, wooden desk, work, working, workplace, workspace,