VoLTE in Austria's "3" H3G network

[steve02]

Please make VoLTE in Austrias "3" (H3G) network possible! I'm traveling regularly to the USA and I can't use simple phonecalls anymore because the networks in the US require VoLTE which i cannot enable!! As mentioned here in this forum I tried the key combination to enable VoLTE but it's still not working when i try to call someone.
Urgent help please!!

[steve02]

Is there any solution for me?

[steve02]

@CH_ASUS @ARP @Falcon @Christine @gustagpo @fussion_ASUS @Irene
I can't use simple phone calls in networks that require VoLTE like all carriers in the USA!
@ all moderators: What is your solution for this? Like this the phone is unusable!

[steve02]

it's been a week and zero response from the moderators? months ago you promised me twice to get back to me about VoLTE with my carrier but also no response.
great service! 👌

[steve02]

guys! i can't use my zenphone 8 in the US for simple phone calls anymore because you won't enable VoLTE for my home carrier: "3" (H3G) in Austria.
is there really nothing you can say about that? are you absolutely ignoring the fact that regular phone calls on the zenphone are not possible anymore?