With the improving of our living standard, nowadays ,almost everyone can afford a cell phone. Every cion has two sides. When we are enjoying the benefits that cell phones have brought us ,we are now faced many problems.

　　To start with , mobiles phones have brought us many conveniences. With a using of a phone ,we can surfing on the Internet whenever we like without opening a computer.What's more, we are imformed of everything important when we carry our cell phone all the time. Futermore, it can also help us with some learning,beacuse we can look up the word in the digital dictionary.

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　　Secondly, our cell phones still causes many serious problems. On one hand,the most problem is electric wave radiation ,which is bad for our health. On the other hand, it will affect our learning and working. For example,When we are at an important meeting with an important partner ,if your cell phone rings, it will interrupt the whole environment and the partner will think you don't respcet him. Another example is when you are having a boring class or meeting,then you will take out your phone reading novels,surfing on the Internet ,playing games ,all thest will distract you from good working.