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Connection to 645M lost very couple of days

Hi.
Since I own the 645M (approx. a year now), GCM is dropping the connection to my watch every couple of days. Sometimes the connection lasts for two weeks, sometimes only for two days. Except that I am fast in re-connecting GCM to my watch, I could really well live without this annoyance.

The 645M does not show up under BT paired devices, though synchronizing works just fine.

Anybody knows how to fix this?

Versions:
GCM 4.17.1
Forerunner 645M 5.20
Android: 8.0.0

0 tmk2 over 6 years ago

Same issue with a FR35 and a Samsung Galaxy S5 Neo. Once in 2 weeks (on average) the watch needs to be removed from the app and re-paired , because it won't reconnect by itself any more.