- No tablet UI, no tab bar: This is a big downside for me. I set the minimum width on my phone pretty high, so the screen fits as much on there as a small tablet. The lack of tablet UI/tab bar is a pretty big issue
- The tab drawer is a whole mess in itself. It's really clunky to use, tab reordering (an essential feature if you want to ever e.g. compare products) wasn't available for a very long time. Now it is, but it's super clunky to use. And it's still not available for private tabs.
- There are addons, but since they only allow a very small selection of addons, they boil down to adblockers and dark reader. There is hardly anything else in there, which is a shame, since FF on Android used to support all addons the desktop browser supported. Their "walled garden" approach to addons also hinders anyone from developing addons for FF on Android, because these addons will likely not be added to the curated list.
Compare that to e.g. Vivaldi:
- It's got a great tablet UI including a tab bar.
- The tab drawer works just as expected, pretty much exactly like in old FF
- It doesn't have addons, but it has adblock (based on and compatible with uBlock Origin) built right into the browser, same with dark mode for websites. All of the addons that both are available on FF for Android and that I care about are built right into Vivaldi.
- The UI in general is much better. For example, opening a new tab is just one click. Same with switching tabs and closing tabs on the task bar.
- Additionally, Vivaldi doesn't get a "This page is not compatible with your browser" as often as FF does, and random bugs on websites are also rarer.
The only advantage FF on Android has over Vivaldi is that it's easier to access the reader mode on FF for Android.