Voicemail on iphone 12 mini does not work

If you’ve recently transferred your number to iD Mobile, while there were new messages in the voicemail of your old service provider, this sometimes this causes odd problems after switching. 

The iD voicemail service is provided by Three. 
The service number for iD voicemail is exactly the same as the service number for Three voicemail.

It’s probably worth turning OFF your iD voicemail for 1-week, then retry iD voicemail again.

Any issues would require iD to raise a ticket with Three to investigate, but communications between iD and Three technical support seem slow and often appear ineffective.
 

Thanks, will try that and see if it works

Alternatively, you could try an iOS voicemail app like YouMail (free version), or HulloMail (£2.99/month), instead of the iD Mobile (Three) voicemail service. 

Will have a look but would prefer ID mobile  VM to actually work, as that's what I'm paying for but thanks for your kind suggestion

It’s almost as if your voicemail is still with Three, and not iD Mobile.
Perhaps iD did not get all your services setup properly when doing the number transfer @Bee51.  

Not sure how you’d encourage iD to check and rectify this, but perhaps your voicemail hasn’t worked properly since your number was transferred from Three to iD.

Hi @Bee51,

Let us know if you are still having issues and require assistance.

Once you get back to us we can PM you and raise a ticket with the team.

Kash