About 20 years ago, a generation of Australian schoolchildren became the first to get mobile phones. Some pleaded, to varying degrees of success, for their parents to buy them a Motorola Razr flip phone, ideally in pink or silver. Playing the game Snake, which involved chasing pixels around a Nokia’s tiny screen to build your tail, was a rite of passage.
Since then, the question of when to buy a child a mobile phone has become more complicated.