Amongst all the usual goodies with the Android 10 release, Nokia Mobile has also included some operator configs. The Android 10 update for Nokia 7.2 update enables VoWiFi (Voice over Wi-Fi) service for Airtel in India. The VoWiFi service for Reliance Jio was already available. All in all, one nice thing here for the users who are stuck indoors with limited cellular connectivity.
There could be similar additions in other regions, but there was no such announcement. We can expect a similar treatment for the Nokia 6.2 as both devices run identical software.
Not sure what VoWiFi is? The service allows you to make and receive calls over a Wi-Fi connection. It is very useful when indoors where the cellular networks are not so strong.