Visual voicemail

[DeanCW]

Hi. Just recently joined o2. I have an iPhone 8 Plus but can't get visual voicemail to work on my phone. I have tried to leave a voicemail on it but it doesn't show and it doesn't even say I have a voicemail on 901 when I ring that too. Voicemail is switched on also. 
I have heard I need idata adding to my phone? Any ideas how o do that because when I ring customer services I get cut off as they are only taking urgent calls. 

thanks 

[jonsie]

Yes it looks like you have a standard data bolt on.

Only customer service can do that for you so you need to keep trying to call them

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