Most of the people surfing live in towns or cities.
Why isn't it more popular?
- It's really expensive! On average, to surf the net for 20 hours costs more money than you can earn in a month.
- Many kids haven't learnt to read.
- They don't always have electricity - especially in the countryside.
The government in South Africa is keen for schools to have access to the internet - but many teachers say they still don't have enough books or even desks and chairs.
Check out kids from the Masai tribe in Kenya who herd goats by day and log onto the web at night in Newsround, Tuesday 28 January BBC One at 5.25pm.