13313970 - University student texting on break13313966 - Two university friends looking at tablet13313965 - Portrait of university student texting13313986 - Student using smartphone at seminar13313974 - Focused student listening during seminar13313943 - University student sitting in classroom13313954 - Smiling university student sitting13314023 - Student standing during break13313948 - Student with book standing beside window13314003 - Student taking exam