Ключевые слова: aged, assistance, booth, button, call, cell, communicate, communication, concept, connect, contact, conversation, customer, design, device, earphone, electronics, equipment, flat, handset, headphone, help, hot, icon, illustration, internet, isolated, line, minimal, minimalism, mobile, object, operator, pastel, phone, pink, receiver, service, shadow, sign, silhouette, speak, speaker, support, symbol, talk, technology, telecommunication, telephone, ui, web,