Ah, maybe there is a misunderstanding. Throughout the web I see that users aren’t able to use NFC based passkeys on android only U2F. I’m reading that USB is supported and NFC is planned but not native to the OS yet. I know that some phone providers have baked in their own support but from everything I see Android doesn’t support it as is.
You can see a discussion from the FIDO alliance here: https://groups.google.com/a/fidoalliance.org/g/fido-dev/c/QFbAJiVxivA
You can also see this in the yubikey android matrix as they state you’d have to use USB only.
I also make a detailed chart have different attempts with and without the bridge using different browsers on my Samsung s23 ultra here: Vivokey Apex Flex Android FIDO2 Issues - #9 by gatsu
I’m curious what model phone and OS you are using to get full passkeys to work on your android? I’m in the market to get a new phone.