Please tell us some basic information before asking for help: Model Name: Firmware Version: Rooted or not: Frequency of Occurrence: APP Name & APP Version (If your issue relates to the app): In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc. ======================================== Hoping that ASUS decide to include these settings to support Australian carriers in the next firmware update (when ever that is??) . If I am reading correctly they certainly have included support for Australian and other carriers in the ROG 5 firmware according to the Qualcomm modem mbn config files. As other users have stated this is a very basic feature in budget phones and I would have thought been there in a flagship phone. Telstra here in Australia certainly don't have a white list per say as to who can and can't have VoLTE access and VoLTE access is automatically enabled on Telstra accounts there end.