hi bro, i live in mexico to, and i'm on altan network, newww exactly, did you have any solution for this situation? i've been searching and it is imposible to make volte work :c
no, you will have to root, there is a thread for the realme gt neo 2 that does it that way and in that same thread they have another method without root which was the one I used, but without success, the other is to use ATT, Movistar or Telcel.
This post records how I combine many tutorials online and finally enable VOLTE and VoWifi on my Realme GT Neo 2 while the toggles are not available at the beginning. TLDR: Most Realme devices support VOLTE and VoWifi, but the toggles may not be...