If you’ve having trouble with your SIM being recognised, it might be that your phone is locked to your old network. You will need to free your phone and get it unlocked so you can join 48. If you’re not techie this might sound like a total head wreck, but it needn’t be!
Check out our Unlock Guide where we have free, impartial advice to help you unlock that phone.
You can also tell us about your Unlocking experience by leaving a review in the guide to help other members identify the best unlocking services for them.