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MMI Codes for Voicemail Rings and so on, no longer work properly....

Anonymous
Not applicable

...if WiFi 4G calling is provisioned on your service. 

 

Happily you can enable and disable under device details in myO2

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MI5
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Registered:
They should work if your device is supported for WiFi calling.
It’s when it’s enabled on an unsupported device that we have seen issues.
I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.
Please select the post that helped you best and mark as the solution. This helps other members in resolving their issues faster. Thank you.
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Anonymous
Not applicable

Fair enough.  🙂

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