THE USE OF SMARTPHONES DURING PHILOLOGY CLASS IN SECONDARY AND HIGH SCHOOLS AND THE MATTER OF PHILOLOGY TEACHER TRAINING IN THE DIGITAL AGE IN VIETNAM Pham Thi Thanh Phuong (Faculty of Pedagogy, VNU University of Education ) Abstract Clause 4, Article 37, Circular No 32/2020/TT BGDĐT of the Ministry of Education and Training, which was issued on September 15, 2020, has allowed secondary and high school students to use mobile phones in the classroom for learning purposes, under the permission and[.]