Ключевые слова: android, app, application, background, black, brand, business, cell, cellphone, closeup, communication, concept, connection, design, device, digital, display, electronic, google, holding, illustrativeeditorial, information, interface, internet, learn, learning, logos, media, mobile, modern, object, online, phone, platform, s8, samsung, screen, service, sign, smart, smartphone, social, technology, teck, telephone, touch, udemy, udemycom, user,