Fenix 5 not recording sleep data

Former Member over 7 years ago

My Fenix 5 is using firmware version 8.0 (I haven't received the staged rollout of 9.2 yet).

Previously, I didn't wear my Fenix at night, but have been doing so for a week.

Garmin Connect mobile is configured with approximate bed time and wake up time, but it isn't recording/displaying sleep data. Instead it shows:

"No sleep level data. To receive sleep data, wear your Garmin device at night."

What steps can I take to get the watch to start recording sleep data?

—Jim

0 reittila over 7 years ago

For some reason Garmin has decided that optical heart rate monitor must be switched on during sleep data measurment. Is it on?

0 Former Member over 7 years ago

It is on, and it's started working again for no obvious reason.

Speaking of the HRM, with wrist based HRM, they can absolutely tell whether or not I'm wearing the watch, but insist on vibrating for notifications anyway when it is sitting on my dresser. Terrible.

0 Former Member over 7 years ago

i have reported a similar occurrence by phone to Garmin Support, after the 9.20 update. There is another thread in the Connect "Troubleshooting" section.

https://forums.garmin.com/forum/into...y-since-update

0 wander_ over 7 years ago

I have found that it does not always, about 1 in 2 nights, detect I am asleep. Wrist HRM is on and all that. How does the F5 actually detect you are asleep?