user.js | Firefox Fenix Nightly, Iceraven, Fennec F-Droid or Icecatmobile

The user.js file is used to configure Firefox for android in the safest and fastest way possible. There are 2 versions:

• Default user.js for average users.
• Another one with less connections as possible, meaning there are not automatic addons updates. You'll have to uninstall and reinstall them (not recommended)

Aims:

• enhance security and privacy
• improve performance
• better fingerprint possible
• reduce automatic connections

Best Use:

This user.js has been designed for mobile purposes and you can use it on these browsers:

• Firefox Fenix Nightly for Android - Mozilla-mobile
• Iceraven browser - Forks maintainers
• Fennec F-Droid - F-Droid (out of date)
• Icecatmobile - F-Droid (out of date)

Note:

This file contains prefs. that are not native to the Android version of Firefox, but I have chosen to add them to avoid that in the future they can be implemented by Mozilla without we can realize it.

All this does not lead into stability issues.

Installation:

ROOT METHOD 1 (file manager)

I would like to suggest the use of Amaze or TWRP File Manager before proceed.

• Download and install Firefox Fenix Nightly, Iceraven, Fennec F-Droid or Icecatmobile from their official websites (see above)

• Start the browser for the first time (offline mode/no data connections) and wait about 5 sec.

• Close it.

• Clone or download zip file and extract it

• Locate browser's installation directory similar to this:

  ✳️ Firefox Fenix Nightly data/data/org.mozilla.fenix/files/mozilla/[xxxxxxx].default

  ✳️ Iceraven data/data/io.github.forkmaintainers.iceraven/files/mozilla/[xxxxxxx].default

  ✳️ Fennec F-Droid data/data/org.fdroid.froid/files/mozilla/[xxxxxxx].default

  ✳️ Icecatmobile data/data/org.gnu.icecat/files/mozilla/[xxxxxxx].default

• Copy the extracted user.js file to the above installation directory.

• Delete prefs.js file inside the above directory

• Start the browser and test if user.js was applied : browse to about:config (put it in search bar) and look if config.applied is true.

If this doesn't work I suggest you to use the ROOT METHOD 2 below.

ROOT METHOD 2 (app)

• Download and install the browser from their official websites.

• Download and install User.js Updater

• Start the browser for the first time (offline mode/no data connections) and wait about 5 sec.

• Close it.

• Open User.js Updater app and grant storage permission.

• Choose Custom and write the following:

  https://git.nixnet.xyz/Narsil/mobile_user.js/src/branch/master/user.js

• Tap UPDATE at the bottom and grant root permission.

• Start the browser and test if user.js was applied : browse to about:config (put it in search bar) and look if config.applied is true.

• AFWall+ USERS: You can disable Use Download Manager option into Settings and enable data connection just to the app itself.

Thanks to v1nc for creating this app.

Thanks:

I really thank the following authors:

• [Quindecim] (https://git.lelux.fi/quindecim/mobile_user.js) - Without him/her, this project could not be possible.
• [Arkenfox] (https://github.com/arkenfox/user.js) - Updates.

Special Thanks:

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