How do you enable Visual Voicemail on O2? (I am a Pay Monthly contract
customer.) This Apple support page says that O2 support Visual
Voicemail: https://support.apple.com/en-gb/108048
I can't find any information on iData anywhere, and O2 support also
didn't seem to know. However they did manage to get Visual Voicemail
working (despite not knowing what that is either!), I think mostly by
correcting their data about my account so i...
