Ключевые слова: allowed, app, application, background, button, call, cell, cellphone, communication, concept, design, device, digital, disconnect, icon, illustration, indication, information, isolate, isolated, limitation, mobile, modern, off, online, phone, power, receiving, reject, round, screen, shape, show, sign, smart, smartphone, software, style, switch, switch off, symbol, tap, technology, telecommunication, telephone, template, touch, turn, turn on,