60% of the world has a mobile

The speed and scale of the world's love affair with mobile phones was revealed yesterday in a UN report that showed more than half the global population now pay to use one. The survey, by the International Telecommunications Union (ITU), an agency of the UN, also found that nearly a quarter of the world's 6.7 billion people use the internet.

But it is the breathtaking growth of cellular technology that is doing more to change society, particularly in developing countries where a lack of effective communications infrastructure has traditionally been one of the biggest obstacles to economic growth. By the end of last year there were an estimated 4.1bn mobile subscriptions, up from 1bn in 2002. That represents six in 10 of the world's population, although it is hard to make a precise calculation about how many people actually use mobile phones.

Africa is the continent with the fastest growth, where penetration has soared from just one in 50 people at the turn of the century to 28%. Much of the take-up is thought to have been driven by money transfer services that allow people without bank accounts to send money speedily and safely by text messages, which the recipient - typically a family member - can cash in at the other end. Vodafone's M-Pesa money transfer service was launched in Kenya in 2007 and now has 5 million users. Developing countries now account for about two-thirds of the mobile phones in use, compared with less than half of subscriptions in 2002. A single mobile phone may have several users in poorer countries, where handsets are sometimes shared or rented out by their owners.

The report also recorded a marked increase in internet use, which more than doubled from 11% of people using the net in 2002 to 23% last year. Here the report identified a clear gap between the rich and poor world: fewer than one in 20 Africans went online in 2007, for instance, and less than 15% in Asia, whereas Europe and the Americas recorded penetration of 43% and 44% respectively. Across the world just 5% of people have broadband internet at home, although this rises to 20% in the developed world. Sweden was the world's most advanced country in the use of information and communications technology, in an index of 154 countries that took various factors into account such as access to computers and literacy levels. .