when using an iPhonen how to view the previous page when browsing a web site

Thanks jbr. I admit to being a technological dunce and consequently don't know how to add a "close and go back in the original tab". Is there some way to add a back button or its equivalent? I think what you are telling me is that the page behavior is integral to the particular page as it is published and that Firefox is at its mercy. However that is not the case with the desktop version or other browsers. There has got to be a back-button function that works for all pages somewhere in the app. I just can't find it.

I just linked to an existing feature request, in case that sounds similar to what you're facing — as the case described there is therefore known and tracked already.

(Depending on your description of "sometime do and sometimes do not" I can only assume, but my guess would be it's the cases when you're getting new tabs opened from the previous one where you then lack the history navigation, hence linking to the existing request as that sounds to be the same case. — However that's also the current desktop behavior, when a page opens a new tab, the new tab is also at the beginning of its history stack, so that's consistent now. I sure can see how on mobile this could be a time saver if the history timeline could also close windows and cross the tab boundary though.)

Thanks again. I hope that Mozilla takes note of this thread and adds the back-button feature to the mobile app. Firefox is such a good app that to stumble on a simple feature like this is a shame.