The Charge 5 would sometimes lose sync with an iPhone and the only way to restore it was to "remove" the Charge 5 from the app and then add it back again, as a new device. Then it would sync and get up to date with data. My guess is the Fitbit engineers did find the cause of the problem but were not able to fix it on the C5 due to limitations in whatever Bluetooth hardware or firmware or some compatibility with iPhone hardware and how the iPhone manages the Fitbit app.
So - is this problem known to be fixed in the Charge 6 ?
The reason this is important, is I received a warning from the Fitbit app about pulse below 40, and that was true, but the alert didn't arrive until I saw the C5 wasn't syncing and did the remove/add but it was a week after the low pulse actually occurred.
Thanks
Andy
