Does it do U2F on an iOS device?
> At launch, it’ll support these well-known password managers and single sign-on tools: 1Password, Bitwarden, Dashlane, Idaptive, LastPass, and Okta. And when using the Brave browser for iOS, the YubiKey 5Ci can be used as an easier way to log into Twitter, GitHub, 1Password’s web app, and a couple other services.