Australia went from lagging to leading the worldwide smartphone revolution in just one year, a major study by Google has revealed.But about four out of five Australian websites are not optimised for smartphones.

Mobile internet usage by Australians now rivals that of PCs for activities like social networking and, soon, shopping, Google found.

Behind Singapore, Australia has the highest smartphone penetration in the world at 37 per cent and we’re also consuming more apps, the research revealed. Australians have on average 25 apps on their phone (eight of which are paid), versus 23 for the US and Britain.