No Safari on Android, so no ad-blocking doesn't work like on iOS :-) Firefox Focus itself works all right on Android Pie. You can even set it as default browse

No Safari on Android, so no ad-blocking doesn't work like on iOS :-) Firefox Focus itself works all right on Android Pie. You can even set it as default browser for opening links in place of Android Web View. Android Pie has DNS-over-TLS for both WiFi and LTE so I am ad-blocking via my private DNS server and blacklists.