One Possible Version
In fact, more students now come to school with cell-phones．My schoolmates have different opinions．Some think it is convenient （easier）to get in touch with others，which also makes you feel safe, especially in time of trouble．Besides，it is nice to enjoy various functions of different cell-phones．
Others think differently．First, the cell phone is not a must in school，as there are some IC phones there,．Second，many often play e-games and send e-massages with their cell-phones，even in class，which will surely have bad effects on their study．What’s worse, it will result in a great waste of time and money．
To my way of thinking, the cell-phone is a useful tool in our daily life．But it doesn’t mean we can use it freely in school．
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