P1604662256009 , via OnePlus 8T , Dec 5, 2020 : Hello, I see that those from oneplus are not interested in clearly answering questions related to volte or vowifi and even 5g, I don't see that they want to implement anything in the firmware on oneplus phones related to volte / vowifi / 5g, so we return to the forum help , my question is : Is it possible to activate / set / modify / test the volt / vowifi profiles for the oneplus 8t phone? There is more information related to this aspect by using pdc / efstools and so on, I tried some of these possibilities but from what I realize at the moment on android 11 it is impossible to access * # 801 # -> toogle on the Full-port switch from EngineeringMode or related to this. If anyone knows a way to make these settings please guide me in the right direction. P.S. i don't want to root my phone.