Dancheng No.1 Middle School can take a mobile phone to repeat. According to the inquiry of relevant public information, we can know that Dancheng No.1 Middle School can bring a mobile phone, but it can't affect the normal teaching during recess. However, some schools don't allow students to bring mobile phones. As a senior three repeat student, try not to bring mobile phones, because smart phones are very attractive now, and games, news information, especially some live broadcasts inside will delay learning, so it is better not to bring mobile phones as much as possible.