Ключевые слова: background, block, blue, board, business, call, card, cell, cellphone, cellular, chip, choose, close, closeup, communication, connect, connection, contact, cyberspace, digital, discussion, electronic, equipment, everyday, family, game, global, handy, information, isolated, many, mobile phone, modern, network, number, object, operator, over, phone, plug, red, security, set, sim, sim card, structure, talk, technology, white,