A friend of mine has an original Vodafone IN tariff. I have a Mobilcom Debitel Vodafone Red M tariff.
Both tariffs should include Wi-Fi Calling and VoLTE. Also in the Mobilcom Debitel Vodafone Red contract. But after tests none of the options are activated.
Mobile phones are a Huawei P20 and P30.
You have to activate the functions in the settings yourself…
https://hilfe-center.1und1.de/smartphones-und-handys-c84081/huawei-c84957/android-90-c85623/voice-over-lte-volte-aktivieren-a797477.html
We're not that stupid either. Wi-Fi calling is activated in the settings VoLTE is not displayed.
I've read that hundreds of times on the internet. Wi-Fi calling is on. VoLTE is not displayed. By both.