I've just bought a new phone and O2 have also sent a new SIM with a different number on it. My current number is PAYG, but the new one is under a Rolling Plan.
(I didn't want a Rolling Plan, but the website made me select something when I was placing the order otherwise it wouldn't let me proceed).
Would I still be OK in simply moving the SIM for my existing number from my old phone to the new one and carrying on using that number under PAYG?
If it will be OK, what happens to the new number? The card with it says that I have to register it by 06/09/23. If I don't (and I don't intend to), will that number simply be withdrawn? Will it be safe for me to go into My O2 and cancel that one now?
Thanks in advance.
