Hi, I recently got a new phone. I have kept my number, put my original SIM into my new phone and had all my contacts etc transferred over . My daughter is going to have my old phone and I need to get it unlocked. On the Vodafone unlocking form it asks for the mobile number and says that this must be for the SIM that's used in the phone I want to unlock. I am confused as to what number I would use. I will be grateful for any help.