Tech support chap told angry customer to think inside the box – and solved the problem

ON CALL Welcome to another installment of On Call, The Register's Friday column in which readers kindly share their stories of untangling tech support situations. This week, meet a reader we'll Regomize as "Steve" who started his IT career doing tech support for a supermarket's own-brand mobile service. "I started in 2006, when many phones still had removable batteries," Steve told On Call. "One day, a customer rang in ranting and raving about how she'd just bought her very first mobile, had use