13-08-2023 20:59
Hi,
I have a pay monthly contract and want to activate call barring whilst abroad. However I don't know the 4 digit password and when I put in the standard 0000 or 1234 is says 'Call setting error' 'Network or SIm card error'.
Does this mean call barring was never initial activated by O2?
Thanks
13-08-2023 21:02
Try 5555