O2

Hi I have just purchased a new phone from Amazon. My monthly sim only contract is with o2. Can I call into the o2 shop and ask them to transfer all my stuff from my old phone to the new one. Thanks

Hi I have a Galaxy S4 which is fine but the battery life is now poor. It has a Micro sim. I am thinking about buying a Samsung J6 off Amazon which has a Nano sim. I have asked o2 to send me out a new nano sim which they are doing. What do I do when I...