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I have a P30 Pro and Red SIMO plan. The 4G & WiFi Calling "extra" is enabled on my account, and WiFi calling works and is an option in my settings app.
There is no 4G Calling option, which I desire.
Any help/advice would be appreciated on if this works on open firmware Huawei devices. Customisation code C431 in particular.
(FWIW this feature does work on the latest open firmware Samsung devices).
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It might be worth calling 191 and Ask the agent to force the phone via sending an OTA configuration update that should provision your phone for Calling Over WiFi.
Current Phone > Samsung Note 10+ 5G _256Gb > Model: SM-N976B.
Samsung One Ui 2.0 / Android 10.
Samsung Gear s3 Frontier Watch.
Thank you. That is indeed true. Completely overlooked on my part. Great that it seamlessly works with no action required on the user's part.