Nieuważny ucznia korzystanie smartphone podczas wykładu - Zdjęcie stockowe & obraz

Education, high school, teamwork and people concept - group of smiling students with smartphones in lecture hall

Education, technology, people and internet addiction concept - close up of students with tablet pc computers at school

Portrait of girls chatting with their smartphones outdoors

Education, high school, teamwork and people concept - group of smiling students with smartphones in lecture hall

Education, high school, learning, technology and people concept - close up of student girl with smartphone texting on lesson

Education, people and technology concept - close up of smiling students with smartphones at school

Education, high school, learning, technology and people concept - close up of student girl with smartphone texting on lesson

Close-up of three girls texting on their mobile phones

Close-up of three friends watching photos on tablet

Close up of young people with mobile phones

Young people are gazing at screens of their smartphones

Young man and his female friends studying together before an exam, sitting at light home interior, banner photo