Not so sure about that last bit, Android is by far the most popular OS according to StatCounter, a global web analytics service: https://gs.statcounter.com/os-market-share/mobile/worldwide
Two facts-
-Android is the most popular mobile OS by a long ways
-But in every jurisdiction its representation among web visitors lags, usually significantly, its marketshare. iOS users, despite the horseshit that appears from Apple detractors, use their browser more than they do on alternatives. They are over-represented online.