This article applies only to an experimental version of Firefox for Android (Beta/Nightly formerly called Firefox Preview) that's no longer supported. Please download the supported version of Firefox for Android at the Google Play store
You can change the default language for Firefox's interface at any time by doing the following:
Tap the menu button.
- Tap .
- Tap .
- Tap a language from the list to choose it. Choose to match your device's language instead.