I was using Firefox mobile with uBlock Origin, and I found that Chrome with no adblocking was a better experience. Page loads, scrolling, zooming, and the other interactions were so slow they counteracted the advantage.

That said, new Firefox mobile is way faster and the nightly build already has uBlock support. Best of both worlds.

I had extreme response time issue on my old phone. I recorded my screen, and I measured a reliable 3-5 60Hz frames between the touch indicator and the page scrolling. Chrome reliably had just 1.

Things got a bit better over time, but unfortunately the thing that eventually fixed it was when I got a new phone. Now I get around 2-3 90Hz frames, which is still worse than chrome, but far less noticeable. I have not measured "New Firefox"/Fenix/Preview yet, but it does feel like it's a bit closer to chrome.

I'm not too bothered about ublock - I already run blokada so the worst adverts are already blocked at the network level - but being in Europe I can't manage without the I don't care about cookies add-on.

Whenever I've tried other browsers - Chrome, Brave, DDG - having to click "I accept" on every single webpage to remove the "This site uses cookies!" pop-up is really tedious. I hope the Firefox on Mobile add-ons support doesn't just start and end at ublock origin.

Slow? I don't find it slow at all, and my phone isn't exactly top-end; what kind of hardware were you running on?

(I don't use uBlock on mobile, but I might go look into it...)

My only complaint is that it doesn't integrate quite as well as Chrome, but I don't think that's Mozilla's fault.

I tried it on a Galaxy Tab s5e and an LG v35, which have last year's mid-range Qualcomm chip and 2018's high-end chip respectively. On the v35 loading was slow, and sometimes it would crash or make all my tabs blank until restarted. On the tablet it couldn't even scroll down a page without lagging. I haven't run into any other apps that do this on either device. Zooming was always laggy and a bit off--bad acceleration curves or something--enough that they've redone it from scratch for other platforms instead of trying to fix the code.

There's a reason Mozilla is rewriting the whole thing.

That's crazy =(

That LG v35 outspecs my BlackBerry KEYone by a good margin, and Firefox is just as fast as Chrome for me. Which is to say, snappy.

I read more details about your performance problems in another comment, and it sounds horrible; I can't imagine anyone using that. Sounds like a nasty bug, I guess..?

I read that Firefox cannot be used with uBlock on iPhone. For me Firefox adds nothing new to my mobile experience with Safari.

Unless I am wrong, which I hope I am.

Why do you hope you are wrong if it adds nothing new?

I hope I am wrong (or better, I hope what I read is wrong) so I can use Firefox with uBlock on my iPhone (I use Firefox on desktop).

AFAIK, you cannot install uBlock (or any add-on) on Firefox for iOS.

Sadly you're right. This is Apple's fault: they refuse to allow alternate browser engines on iOS, so iOS "Firefox" is really a Safari web view with some Firefox buttons on it. Chrome and other browsers have the same problem.

I agree. I'm hoping FF mobile continues to receive performance improvements, but personally I'd put up with a lot worse to avoid adds.