My old phone was with 3 my new contract is also with 3....Its simply an upgrade so to speak....I was informed that the new micro sim and new contract is the exact same as old one....There should be no difference (im told) other than i get a fancy new gadget.......As i say when i phone 3 they tell me my new phone and contract are active and the old one isnt....Yet i phone me from home phone and old phone rings...