Snapdragon Android 13 Samsung Smart Phone Volte Problem

Hello. I am using Turkcell gsm operator. After I did the March 2023 Android update, I checked volte is not active, Anyway, when I turn the device off and on, the volte icon appears, but when I switch between Wi-Fi and mobile data, the volte icon disappears. During this time, my line is constantly on the 4g network. When I make wi-fi the preferred search preference to the wi-fi search in the device settings, the wi-fi search icon appears, but when I select the mobile network, the volte icon goes away. In my conversation with Turkcell customer services, they said that the volte service is active and they do not have a setting to make. (VoWifi will not be activated if volte is turned off in the operator settings anyway) I was using volte actively without any problems before and there was a volte icon. First of all, I reset the network settings from the settings, it didn't work, I reset all the settings to factory settings, but it still didn't work. Every time I turn the device off and on, the volte starts active, but when I connect to the wi-fi network, the volte disappears until I turn the device off and on again, and this problem continues every time I turn it off and on. device Snapdragon Android 13, April 2023 security update installed