Ключевые слова: adult, background, business, businessman, busy, cellphone, colleagues, communication, conference, coworkers, device, group, hand, holding, internet, lifestyle, man, meeting, message, messaging, mobile, mobile phone, modern, office, people, person, phone, professional, screen, smart, smart phone, smartphone, sms, team, technology, tehnology, telephone, text, texting, using, wifi, wireless, young,