I don't know about anyone else, but I have to shut down my I-phone XR and Forerunner 45 at least once a week because they don't sync and pair with Bluetooth. It's a process that sets me back for sometimes an hour. I don't have that kind of time, especially when I'm trying to get out the door for a run before work. I'm not sure why they disconnect, but it's pretty annoying. Garmin, please fix this bug or don't offer Garmin Connect App as an option. It would be easer, at this point, to get an old paper running journal because I'm losing so much time trying to wrestle with getting your OS to communicate with my phone. I love the Forerunner 45. It's a great running watch, but you will likely loose me as a customer if you don't fix this bug.