By default, Android blocks installation from unknown sources. You must explicitly allow your browser or file manager to install APKs. Also, always ensure you are downloading from the official Firefox page on Uptodown (published by Mozilla ), not a copycat.
A: Yes. Mozilla Firefox is open-source software under the MPL 2.0 license. Distributing the APK is legal and permitted. mozilla firefox uptodown apk
: Unlike many mobile browsers, Firefox allows you to install various Android add-ons directly to block ads or enhance functionality. Cross-Device Sync By default, Android blocks installation from unknown sources