For some reason I can’t use my Xbox One controller for the mobile version of the emulator. I want bluetooth controller support to be implemented like most emulators. Sometimes I hate covering my phone up, my thumb slips too far and the touch controls for the analog stops, or maybe I accidentally miss a button and press something else because I don’t want the buttons to take up too much space. It would be so much easier if, along with the hide buttons options we currently have on Citra mobile, we had optimized bluetooth controller support. Just more convenient and visually appealing.
I’m not sure if you need to root your phone for that. I can’t use my Playstation 3 controller for example on my LG G8s ThinQ without root but I can on my Xperia Z natively (there is official support for it).