Modern websites are "heavy." Expect slower loading times and occasional crashes on sites with heavy JavaScript or high-resolution video. Optimizing the Experience To make Firefox run faster on your legacy device:
Android 4.2.2 (Jelly Bean) , the most stable and feature-rich "solid" version of Firefox is Firefox 68.x Firefox Apk Android 4.2.2
If you're still interested in trying to run Firefox APK on your Android device running on 4.2.2, here are the general steps to follow: Modern websites are "heavy
Unlike the stock "Browser" app on Jelly Bean—which was officially deprecated by Google in favor of Chrome—Firefox uses its own Gecko engine. Privacy Features: Firefox Apk Android 4.2.2