Unless allow access, can't work
Firefox 57.0 on a Samsung tablet. You are prompted to allow/not allow FF to 'record audio' and 'take pictures and record audio'. If you say no, then you can't use that option. It prevents bookmarks and attaching files through email from working.
Opaite Mbohovái (2)
How does Firefox for Android use the permissions it requests? might help you a bit
They are two separate prompts. And, why do we have to allow FF to be able to have access or to be able to record audio, pictures and video? Especially since we are not doing any of those things. All we want to do is be able to securely use the browser. Giving FF access to these appears to make FF less secure. Furthermore, if we do say 'no', why can't we still access bookmarks and attach files to emails - since there is no audio, picture taking or video recording.