no, cellular devices shouldn't be banned from privately owned businesses, because you never know what may happen or what's happening in someone's family or even to then.
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A provider of cell phones its a business that sells phones to people
Cell phones allowed people to be in constant contact.
in my opinion mobile phone make students feeling well, and think they will be safe when anything can happened
idk i need the same answer but this might help. no inconvience emergency contact and academic help
oligopoly- because there are a lot of different firms which sells blackberry phones