Ключевые слова: 4g, abstract, background, banner, big data, blue, broadband, broadcast, business, card, cell, cloud, communication, computer, concept, connect, connection, data, design, digital, fast, generation, global, high, hotspot, icon, information, internet, isometric, lte, mobile, net, network, phone, secure, security, service, signal, sim, smart, smartphone, speed, symbol, technology, telecommunication, transmission, wave, web, wifi, wireless,