Bringing of Cellphone in Public and Private Highschools to be BANNED?

what's your reactions?

for me bringing of cellphones in schools SHOULD NOT be banned.
as we all know, cellphones are now part of a person's necessity. it helps us communicate with other people without ease.
we students have many different reasons for bringing fones to school. one of those reasons is we need it for emergency purposes.
what are those?
1. if we left something at home, we can text or call our parents or whoever is in our house to bring it for us.
2. if ever classes were suspended when we're already at school, we can text our parents or guardians to fetch us, especially when raining.
3. if there are unexpected incidents in school (e.g accident) we can easily contact our parents to inform them.
4. if ever there's fire or earthquakes, we can inform anyone what our condition is and where we are.

those are just some of our reasons for bringing our phones to school.
if we are to remember, over the past years, there were terrible earthquakes that happened during school hours. some of the schools collapsed, trapping some students inside. their cellphones helped the authorities to save them and know that they're still alive.

for me, i suggest not a total ban, but moderation of cellphone usage. even us, college students are always told to moderate our use of cellphones during school hours. we just need cooperation and understanding from students and teachers....