Karl_Coursimault , via OnePlus 8T , Nov 25, 2020 : Hi! Where can I configure the native SIP-client on my OnePlus 8T? Thank you! Karl
StefanStark , via OnePlus 8T Aquamarine Green , Nov 26, 2020 : If the device is not certified by the provider (even if supporting VoIP and calls over Wi-Fi) you can't use it. Oneplus needs to take the steps and get in contact with all the providers.
