Smartphones and tablets in the Netherlands used over 27.5 billion megabytes of data in the second quarter of this year, which is an ‘explosive’ increase, the consumer authority ACM said in its latest quarterly report.

Data usage in the second three months of the year is up almost a third on the first quarter of the year, the ACM said.

The switch to faster 4G internet connections, which are more often used to watch television and films, is behind the rise, the ACM said. The 4G network accounts for around half of data volumes.

‘We expect this strong growth to continue, based on our own figures and contacts with telecom companies,’ ACM board member Henk Don said in a statement.

By the end of the first quarter of 2016, all Dutch telecom companies will have rolled out their 4G networks, making it available in 99% of the country.