When the children are little, hand-me-downs mean coats and wellies. As they get older, they start to mean phones, tablets and laptops. And that’s when things get a bit more complicated. In our house, tech tends to travel down the age ranks. The eldest upgrades, the middle child inherits and the youngest gets whatever is left. It’s a sensible system, but it has its quirks. Here’s what we’ve learnt about making it work. DepositPhotos.com Before you hand anything down The first rule in our house is that a phone isn’t handed down until it’s been properly cleared. That...