Problem with my Fitbit connecting to my iPhone after the 17.5 iOS update. The problem one was easily rectified when I turned off my iPhone, and then turned it back on. The home screen was not updating, and when I clicked on the upper left hand device/application button, it showed that the application was unable to locate my Fitbit device. Again all I did was turn off my iPhone and turn it back on and this corrected the problem. I am using an iPhone SE third generation running 17 five and running fifth application for 16. I hope this was helpful to anyone else who has experienced freezing after the update to 17.5.
