It is said that "Students should be allowed to take mobile phones to school" and I agree with this statement. The most obvious reason is that students can get information quicker and get their answers, lessons in the best way. In other words, mobile phone is a learning tool for students. Second, mobile phones helps students communicate with teachers and friends via learning apps such as Zoom, Shub classroom, google meet, etc. This is beneficial due to the fact that communicating online can reduce the embarassment for students and studying online is the way that can judge students' ability of acting quickly, thinking logically and computering. Last but not least, students can relax by using phones to relax at breaks by listening to music, taking photos with friends or playinng some pieces of games. In short, these are among the reasons why students should be allowed to take mobile phones to school.

I am not at all in favor of letting children use cell phones because there are so many harms. At that age, children easily addicted to phones. From there, increase the risk of eye damage, sedentary, obese and dull. Moreover, science also proves that cell phone waves have a negative effect on the child's brain. Children in grades 8 and 9 should not use phones yet because they will be distracted from learning. Having a phone with them, children easily love games, view unhealthy information and images, or go on social networks to comment on this and that, easily leading to friction, fighting ...
For conscious kids, it's beneficial to use a new phone. At that time, parents are easy to contact and children can install English learning dictionaries or other useful software. I think that only children in high school or higher should parents and the school let use the phone.