What is shown in the column chart indicates that there is a dramatic change in the mobilephone suscriptions all around the world between 2000 and 2008.From the information given in the chart,we can see there is a marked jump in the number of mobile phone subscriptions among developed countries from about 0.5 billion to 4 billion,while the amount of developing ones has been on a slowly rise from 0.8billion to 1billion.
Firstly,the different increasing rate indicates that economic development has played a inporant role in the increased numer of moble phone subscription.Most of people from developing countries cannot afford a mobile phone due to a poor financial state,which is common in the vast developing world.Secondly,there is not too much need for mobile phone in the developing world.Considering industry structure of these area ,you can find that commercial axtivicities and internet sections are hard to see, which needs information exchanges mostly.It may explain why most people can live without mobile phone among the developing world.
