Why can my account use Firefox's built-in free VPN on Windows, but not on Android?

The earliest I have seen you may be able to use a built-in VPN in Firefox for Android in testing may be Firefox for Android 152.0 or 153.0

''<p>Liza Daniel [[#answer-1823152|said]]</p>'' <blockquote>Firefox doesn’t actually have a built-in VPN on either platform. On Windows you’re likely using a VPN extension or the Mozilla VPN app, while on Android Firefox doesn’t support those extensions, and Mozilla VPN is a separate app. </blockquote> The desktop has had a built-in VPN since Firefox 149.0. Though the built-in VPN feature in Firefox operates via a secure proxy network rather than a traditional, full-device virtual private network like the standalone Mozilla VPN app which is not free. https://support.mozilla.org/en-US/kb/built-in-vpn https://blog.mozilla.org/en/firefox/built-in-vpn/ https://www.firefox.com/en-US/features/browser-with-built-in-vpn-secure-browsing/