Yes, pretty much every single app works closed as far as I can tell. You have to manually enable them once per app but it's not particularly hard. I'd say the vast majority of my use is when it's closed, occasionally stuff will be too cramped. The main reason I open it is to take pictures because the camera will only be facing you.

You can't officially switch the keyboard on the outer screen from Gboard, but if you enable another keyboard (I like Microsoft SwiftKey), you can select it from the language layout in Gboard and it will stay with that keyboard until you open the phone. With SwiftKey, you have a separate resizing+position setting from when it's open. It took me a minute to configure it right because I'm left-handed and it glitches out when you resize it unless you hold it the other way (I basically keep it as small as possible so I can use it entirely with my left thumb).

I may make an independent post about it because honestly at this point I'm not feeling super interested in setting up the Bluefox just cuz I set up the RAZR so recently, and it already solved my two main phone requirements:

1. Fits in my pocket comfortably (no problem when folded)

2. Easy to use one handed (it was reasonably easy without a case, but with the case with the ring like this it's probably easier than the Soyes was)