When I tap on a photo in an activity, it brings up a screen with all the photos on a given activity. The only way to return to the previous screen (whether that's the Home feed, or an activity detail page that I came from), is to tap the "x" in the top-left corner. It would be great if I could just swipe right from the left edge of the screen, similar to how swiping right works in the rest of the app. It's a bit annoying to have to reach all the way to the top-left (especially on larger phones, or with smaller hands)
(I am using the iOS app; I have not used Android so I don't know if this suggestion applies there as well)
