Ключевые слова: 20s, adult, app, app usage, audiobook, background, beautiful, cellphone, device use, enjoying, female, friend comfort, girl, happy, headphone, headphones, headset, holding, internet, laughing, music, music playlist, people, people positive, phone, phone track, portrait, pretty blog, radio channel, relax weekend, smartphone, smile, smiling, social messaging, song, sound quality, student, technology, teen, teenage, teenager, teenager cell, wireless, woman, woman carefree, women, working, young, young popular,