Okay, so I lost my phone 
I have tried to put a new orange sim card into his phone and it comes up 'sim registration failed' so I tried a Virgn sim card instead... this one worked but instead of saying Virgin on the home screen it says T-mobile, and whenever I try to call the number of the Virgin sim card, it says I have dialled an incorrect number... why is it doing this? It worked before he gave it to me... have I broke it? :/
I have tried to put a new orange sim card into his phone and it comes up 'sim registration failed' so I tried a Virgn sim card instead... this one worked but instead of saying Virgin on the home screen it says T-mobile, and whenever I try to call the number of the Virgin sim card, it says I have dialled an incorrect number... why is it doing this? It worked before he gave it to me... have I broke it? :/