With the social progress and development of alternative cell phone a lot of communication to mankind has brought a lot of convenience and benefits. Cell phone nowadays has become the most popular contact and communication tools.

Advantages: 1) This can be called the Exchange, not far from 10,000 can be linked to the people who want to contact

Have substituted the very many communication way along with society's progress and the development handset, has brought very many conveniences and the profit to the humanity.The handset has become at present the most universal relation and the communication tool.

With social progress and development of mobile phone replaces a lot of communication, generated a lot of the convenience and benefits to mankind. Mobile phone has become the most common types of liaison and communication tools.

As the progress and developing the mobile phone of the society has substituted a lot of ways of communication, have brought a lot of facilities and benefits to mankind. The mobile phone has become the most common connection at present and linked up tools.