Please note that Firefox Aurora is no longer available and has transitioned to Firefox Nightly. More details here: hacks.mozilla.org/2017/04/simplifying-firefox-release-channels/
Firefox Nightly is designed to showcase the more experimental builds of Firefox. The Nightly channel allows users to experience the newest Firefox innovations in an unstable environment and provide feedback on features and performance to help determine what makes the final release.
Found a bug? Report it at http://mzl.la/android_bugs
Firefox Nightly automatically sends feedback to Mozilla: mozilla.org/privacy/firefox/#telemetry
Want to know more about the permissions Firefox requests? mzl.la/Permissions
See our list of supported devices and latest minimum system requirements at mozilla.org/firefox/mobile/platforms/
Mozilla marketing: In order to understand the performance of certain Mozilla marketing campaigns, Firefox sends data, including a Google advertising ID, IP address, timestamp, country, language/locale, operating system, app version, to our third party vendor. Learn more by reading our Privacy Notice here: mozilla.org/privacy/firefox/
Firefox Nightly for Developers