Listening

1) How many cell phones are there per person in the world?
6 billion mobile phone and 7 billion person in the world. 1 mobile phone for person more or less.
2) What are the differences in different countries? Can you comment some specific cases?
All countries has got a different penetration rate. In the table I can see two differents parts the firts part all the countries have got more off 100% penetration rate but the second part the countries have got less off 100% penetration rate.

In Russia the people have got two phones for person. In  United States all the people has got one phone.

3) What will happen in the future?
In the future is posible all the people have got a phone.
4) How is it that we can speak on a mobile phone without hearing other conversations from other people?
This is possible because now we can writte the Word in the phone .