Yesterday, my Forerunner 935 starting telling the wrong time. It is currently losing 10-20 seconds in every minute. It is a gradual drift.
I have factory resent the watch, disconnected it from and uninstalled the Connect app, and checked that the watch is set to automatically update time from GPS. It still loses 10-20s per minute.
I have used the timer on the phone and comapred it to an external digital stopwatch. One minute on the phone is about one minute and seventeen seconds on the stopwatch. So it seems to me that theeis something screwy here.
Of course, if I start an activity and connect to GPS then the time resets itself. Simiarly, having reinstalled the Connect app, if I sync to the app then the time resets. But in both cases the time immediately starts to be slow.
Any suggestions or advice on how this might be fixed? I've emailed Garmin Support, but am not expecting much of a response.