4 stars: Firefox is and always has been my favorite web browser, and even on Android it continues to be my favorite. One issue that I've been having however, is that on occasion, when going into the tabs list, it doesn't always bring me to my currently active tab, instead leaving me at the top of the tab list, which is a bit annoying as I have ∞ tabs open all the time.
3 stars: I get a fairly consistent crash when I watch a video in full screen, then close that and switch to watching a second video in full screen. App just closes and the video will sometimes play the audio in the background. But upon opening the app again all I get is nothing, I just see my background. It usually takes a force stop in the settings to get it working again.
2 stars: Usually my browser of choice, but a bug in the newer releases has significantly reduced overall functionality. Downloading any file, from any website, causes apps to crash. Not Firefox itself, but anything running in the background will crash. No other browser causes this problem, and older versions of Firefox don't have this bug. Whatever it's doing while downloading files, it's not agreeing with anything else on my phone.
...