Advocates of this believe that like smoking which pollutes air, the use of mobile phones causes another kind of pollution, and that is noise. Inconsiderate use of them can be quite annoying. For example, loud conversations on mobile phones in public interrupt the pleasure of a quiet talk with friends. Besides, using mobile phones while driving can be a distraction for drivers and considered as a main contributor to road injuries. What is worse, excessive use of mobile phones can cause damage to people's health. Particularly, too much exposure to the tiny screen can be detrimental to young children's eyes.

However, the important role of mobile phones in modern life cannot be denied. First, for the majority of users, mobile phones provide them with easy and convenient communication that nothing else can offer. Compared with letters which take a couple of days or even weeks to reach the recipient, calls or short text messages via mobile phones enable users to stay connected with their social circles in a more efficient way.

Moreover, new phones with multi-functions are constantly pushed to the market due to the application of new technology and they add more color to the dull routine. For instance, smartphone users now can share interesting photos or their thoughts on a certain topic wherever they go. Also, convenience is important in modern life and the updated functions meet such need. New smartphones enable users to pay all kinds of bills or make shopping payments effortlessly, saving time for work or leisure. Unlike laptops or other advanced hi-tech devices, mobile phones are smaller, lighter and easier to carry, therefore they gain tremendous popularity among people who needs to travel frequently and keep in touch with outside world. 

In conclusion, unlike smoking which is definitely harmful to smokers and the environment, mobile phones can benefit people if they are properly used. Therefore I do not think it is advisable to ban mobile phones, but guidelines about how to use them in a civilized way are essential.（By Amy)

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