Xperia 10 III can't use Type-C headphones

Indeed you are right, it’s not the same hardware. I’m reacting to the previous message from @deloptes that says “it is stated in the documentation that it is not supported” which is what I find strange since it is known to work in other hardware.

Also here from @attah

I mean to support the idea that this should be a bug and not something known not to work. I can’t confirm myself, I’m interested in these issues and I’m anxiously waiting for a full confirmation of some model that works before purchasing one myself.