I recently had my iPhone unlocked and received a message from o2 saying my next step was to plug the phone into iTunes with a SIM card that had not previously been used in the phone. I duke so and the phone synced. And so I thought the phone was then unlocked. I'm now in Canada and went to purchase a new SIM card today when the guy put a SIM card in my phone it said it was not unlocked! Where can I go from here as my laptop is back in Ireland.