on 03-03-2019 23:00
Solved! Go to Solution.
03-03-2019 23:19 - edited 03-03-2019 23:21
Changing the sim and phone won't affect your tariff at all.
I have done the same thing a couple of times.
If you are anywhere near an O2 shop it would be easier for you to pop in there. The process will be completed before you walk out of the shop usually.
Best of luck and welcome to the forum.
on 03-03-2019 23:58
on 05-03-2019 23:02