Hey Anish!

In order to properly answer your question, more information would be required than that. You haven't mentioned that where the mobile phones are allowed or not or from where one is allowed to leave for the market. The context is not clear. Please provide adequate details stating if you are referring to some college campus or some other institute. Generally, in college mobile phones are allowed but using it during exams or when classes are going on is not permitted. You can either repost your question with complete details or you can also write in the comment section.