Ключевые слова: 3g, 4g, 5g, analysis, background, blue, call, card, cell, cellphone, cellular, chip, closeup, communication, concept, connect, connection, contact, device, discovery, electronic, equipment, finger, glove, gsm, hand, hold, information, internet, isolated, macro, micro, mobile, network, number, operator, phone, provider, research, science, service, sim, sim card, simcard, smart, smartphone, sms, talk, technology, telephone,