Seeing that I could not register for VoLTE on the Italian Vodafone network, I tried to check the availability of such service for all mobile providers in Italy. The results I found are as follows.
- Vodafone: VoLTE is available, but no Sony device is in the list of supported terminals.
- WindTRE: VoLTE is available, but the only Sony device supported is the Xperia 5 II.
- TIM: VoLTE is available, but I could not find a list of supported devices. However, its low-cost brand Kena Mobile does provide such a list, where no Sony device is listed.
- Iliad: VoLTE is currently not available at all.
Anybody who has more accurate or updated information is welcome to provide further information for Italian users.