Well, you're very lucky (genuinely).

In 2025, I tried to access my services using IPv6 with 4G phones and different subscriptions (different ISPs), fact is, many (most?) of them did not support IPv6 at all :(

I had to revert to IPv4. And really I have nothing against IPv6, but yeah, as a simple user, self hosting a bunch of services for friends and family: it was simply just not possible to use only IPv6 :(

(for context, the 4G providers are French, in metropolitan France)