Firefox for Android is some of the worst software I've ever used. A lot of extensions won't work in it, and even Edge Canary is far better with them. It is extremely slow, and the UI is horrible.

I'm running it on a device with a Qualcomm SM8635 Snapdragon 8s Gen 3 chipset, and it just crawls. The UI is very unresponsive, and page load times are terrible. It also has to reload the page if it was running in the background and you switch back to it.

Strange, I am running it on a Snapdragon 8 Gen 2 (Z Fold 5), and it's totally fine for me. (If anything, it's a little too good at staying in the background; if you have private tabs open it insists on persisting in memory.)

Not saying your issues aren't real, but rather maybe there's another app or your manufacturer's flavor of Android that's causing the issue (like those aggressive background killers).

As for Edge, I used to be a big fan, but when they finally introduced history and tab syncing in 2021, it didn't have E2EE, and it still doesn't, which I find inexcusable. All the other major browser vendors offer it, even Google (though you have to opt in).

I don't have any issues with it. NoScript and uBlock Origin are working fine for me.

That's pretty harsh. It works fine for me. But even if it didn't, I'd still use it just for uBlock Origin.

I have a OnePlus 5T from 2017 with a Snapdragon 835 processor and find that Firefox works perfectly well on it. I also have a device with a Snapdragon 8cx Gen 3 processor and Windows 11 on ARM. Firefox runs smoothly on that too.

Edge canary runs on android with full extension support?