I used a Fairphone 4 with /e/ and it was good. Not great, but useable. I expect the hardware bugs I ran into (using the camera only worked like 20 times before the phone needed a restart, Bluetooth randomly not working) to be ironed out by now. Currently on an old Samsung and it is more solid, but I also liked the environmentalism with the fairphone. Anyone with a Fairphone 5 and something like a glucose sensor thats in constant use?