Text, text, text, that's all they think about: but are all those hours on the phone and Facebook turning teenagers into screen-enslaved social inadequates? Jon Henley finds out
"I'd rather," deadpans Philippa Grogan, 16, "give up, like, a kidney than my phone. How did you manage before? Carrier pigeons? Letters? Going round each others' houses on BIKES?" Cameron Kirk, 14, reckons he spends "an hour, hour-and-a-half on school days" hanging out with his 450-odd Facebook friends; maybe twice...