完整原文
In my opinion, students should not be allowed to bring mobile phones to school because this bad habit can seriously affect both their learning and physical health. Firstly, phones often distract students during lessons, making it difficult for them to focus on teachers and complete assignments efficiently. Secondly, staring at small screens for too long reduces face-to-face communication with peers and may gradually harm their eyesight. However, schools can offer public landlines in the staff room for students who truly need to contact parents in emergencies. Therefore, banning mobile phones in school ultimately helps create a quiet and focused environment where teenagers can truly concentrate on their growth.