https://github.com/mozilla-mobile/focus-android/wiki/Architecture-Decisions https://github.com/mozilla-mobile/focus-android/wiki/Archite... Notice that they co

https://github.com/mozilla-mobile/focus-android/wiki/Architecture-Decisions https://github.com/mozilla-mobile/focus-android/wiki/Archite... Notice that they could not support Android 4.4 because they would require using geckoview. Also, there is no way a browser of only 4MB can contain a whole web engine. The only Android browsers that get so small depend on webview. Consider this, even the old Presto based Opera Mobile clocked in at 15MB on Android.