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965 sleep tracking

My forerunner 965 stopped tracking sleep about a month ago.   Any fix?   I've synched and am on current software (22.22).

  • Is it correctly recording HR at night? 

    Mine has been fine.

  • First check if you have set "Battery saver" in Sleep mode and if you do disable it.

    Second, try to set up sleeping window from 01:00 till 09:00 for every day.

    If this 2 options do not help, then it is time to first make a full backup of the watch ( settings/sistem...)  and then "delete all data and factory reset" (settings/sistem....). If you have some applications and watch faces instaled you will have to reinstal it...

  • "DELETE ALL DATA AND FACTORY RESET"  resolved almost all my problems (sleep and nap detection, HR accuracy, altitude accuracy.... it is preaty good now)