First of all, Firefox Preview (code name Fenix) is Mozilla's effort to create a new mobile browser, so this is unrelated to which version of Firefox you run on your desktop.

Second, it's called Preview for a reason. Support for add-ons is currently being implemented, so if you install Firefox Preview on an Android device right now, you won't be able to use uBlock Origin yet.

Third, the built-in tracking protection blocks most ads (at least on websites I frequent EDIT: which do not include Google or Facebook etc.), so you can already try it out if you just want to see fewer ads and don't absolutely need uBlock Origin.

Oh I didn't read the "preview" part, that's why I was surprised with all the uBlock issues. Thanks for the explanation.

You're probably using the regular Firefox browser (e.g. for Android [1] ) which supports most extensions and has done for a long time.

But this was deprecated a few months ago in favor of a new browser, still early in development, that has no extension support. Previous HN outrage: [2]

At the time I don't think they had any timeline for adding extension support, but now it sounds like major extensions could be supported within the next 9 months.

[1] https://play.google.com/store/apps/details?id=org.mozilla.fi...

[2] https://news.ycombinator.com/item?id=20295694

Was it really deprecated ? I have heard something about it being Firefox 68 based for the time being while their are working on something new (presumably Firefox Preview ?).

It would be really sad if they really did deprecated it without providing a proper replacement first - eq. comparable addon support & other things the current Firefox on Android can do.

> But this was deprecated a few months ago

Uh, no? Firefox Preview will eventually become the new version of Firefox for Mobile. That doesn't mean the current Firefox stopped getting updates.