Christine_ASUSHello Christine, how are you?
Thank you for your asking. To my knowledge, there is no carrier in Brazil supports VoLTE/VoWiFi in ZenFone5Z (ZS620KL). Besides, the carrier supports VoLTE/VoWiFi in one model does not mean that it supports VoLTE/VoWiFi in another model.
Please check with your sim carriers if they support "VoLTE/VoWiFi in ZenFone5Z (ZS620KL)" or not. If the carrier supports VoLTE/VoWiFi in ZenFone5Z (ZS620KL), kindly provide me your carrier name for further checking.
Christine_ASUSWow carries support your budget phones India but not your flagship model. Isn't that intersting. Admit it you guys are pathetic n lazy, not bothered abt getting the feature on 5z
Thank you for your asking. If you want to ask about Vo-WiFi, no carrier in India supports Vo-WiFi in ZenFone 5Z.