Wifi calling in S23 ultra

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I open call settings in my samsung s23 ultra and i didnt find wifi calling in the menu 

Why ?

[أبوسرور١٢٢]

Wi-Fi calling activation comes from service provider, not Samsung 

You have to wait until your service provider activates the service in all devices 

You can contact them in order to get to know whether they support the service or not 

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👏🙏 i know but i didnt find the option itself (no even inactive gray button called wifi calling in menu)

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If they activate the service, the option will show up in the Settings menu 

[AlyS]

The option itself appears only for (we) sim cards till now
Samsung will send updates for other operators
However even after the option is available the operator should activate it for your sim