modem config

[Danielgregory]

Hi,  I used the modem config from: https://band.radio/xperia-band-unlock  I now have 5G on my phone, however I do not have VoLTE. I am in Australia with Boost. Is there anyway to VoLTE to work? I tried out a Amaysim (I think that's on the Optus network) and that got me VoLTE.  Is there any modem config files for this phone for Australia?  This phone has Qualcomm X55 I think. Could I use a config file for Australia from another phone?

[Danishblunt]

The xperia is a little weird when it comes to that, it doesnt seem to display the VoLTE logo on 5g. You can test by calling someone and see if your phone switches to 3G or lower, if it stays at 5g you know it uses VoLTE, thats how I figured out that I had working VoLTE without the VoLTE logos.

[Danielgregory]

I think iPhones do that as well.

I am dropping to 3G when I make a call so no VoLTE.

If I could get a modem config file for Australia, I'm sure it would work fine.

Not sure if anyone has made one or if I could get one from another phone that uses the same Qualcomm modem as the 1 II does.