Should students be allowed to have cellphones in school,

I think that we should be allowed to have phones because then at lunch we can text our parents or our siblings to ask if there ok or for lunch or if your in trouble you need to text someone, as well if it was an emergency you would need to ring the cops,mum,dad,fire department or the ambulance. Bad reasons one of the reasons kids shouldn't be allowed to use their phones in school is because they can simply cheat during a test or get distracted by text messages or any social network. But a good reason that kids should be allowed to have devices is that they can act in case of an emergency.