International Journal of Preventive Medicine (Int J Prev Med)2008-7802156202409083435ENDepartment of Community Medicine, Bhaarath Medical College and Hospital, BIHER, Chennai, Tamil NaduDepartment of Community Medicine, Bhaarath Medical College and Hospital, BIHER, Chennai, Tamil NaduDepartment of Community Medicine, Bhaarath Medical College and Hospital, BIHER, Chennai, Tamil Nadu20240908<p>Dear Sir,</p><p>Digital technology has changed the whole world in the past two decades. It has contributed to all fields with its innovations. One of the key reasons for the success of digital technology is smartphones. During the coronavirus disease 2019 (COVID‑19) and post‑COVID‑19 era, the teaching– learning process has become technology‑dependent. So, most of the children are exposed to this technology.</p>http://ijpm.mui.ac.ir/index.php/ijpm/article/view/2920http://ijpm.mui.ac.ir/index.php/ijpm/article/download/2920/717718761