In case you're using Firefox on mobile - so myself and like four others - disabling Firefox' new Facebook data collection feature is quite a bit harder than on desktop, but it can be done:

  • Go to chrome://geckoview/content/config.xhtml
  • Use the search field to find the entry for aboutConfig and enable it
  • Go to about:config
  • Search for dom.private-attribution.submission.enabled and set it to false
  • Done. This only works on Android, because Firefox on iOS is just a Safari skin.

    @thomholwerda
    Doesn't seems to exist on Fennec-fdroid, hope the maintainer set it to false when they rebase on Firefox.
    @Lana @thomholwerda do you feel Fennec slower than FF?
    Can you use add-ons like Ublock?
    @Paul_Aguayo
    @thomholwerda
    I can use ublock and don't feel load speed differences.
    @Lana @thomholwerda thanks for the info