How to enable Visual Voicemail?

[Jon-]

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

[Enlli · Accepted solution]

Make sure O2 know you are using an iPhone and turned on iData in your account

Guide: How to find help & contact O2 

[MI5]

@Jon- 

You need iData.

Contact O2 to have it enabled on your account.

Guide: How to find help & contact O2 

[Jon-]

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 it correctly says I have an iPhone.

[pgn]

Result, @Jon- - the persistence that one has to apply to get a working solution beggars belief at times.

[Jon-]

Indeed - I've been a customer (this time) for over a year I think without having Visual Voicemail, because the customer support person I spoke to last year insisted that O2 didn't support Visual Voicemail (despite me pointing out that O2 were the original iPhone partner and the first UK company to support it!)