So my mom upgraded to the iPhone 4s and gave me her iPhone 4. She is with the mobile network Vodafone, and I'm with Meteor. So I put my sim into her phone and it said not accesible, so the meteor people said you need to call vodafone and get the unlock code.So, we called Vodafone! They told my mom to put her Vodafone pin back into the iPhone 4 and call * #06#. She did that and the big long unlocking code came up.So, I took out her sim and put my meteor sim back in, expecting the phone to ask me for the unlocking code. Instead, it just said sim locked and requested my pin code. I put in my pin code and that was fine. So the phone is unlocked, my sim is in there, but it says no service and I can't make calls? Its basically acting as if there's no sim in there. Can someone please help! I need my meteor sim to work in the iPhone 4!