Charge 3 sync keeps failing with iPhone 11

[markyd]

The sync with my iPhone 11 keeps failing with the message "Lost Bluetooth Pairing". I go through the steps of resetting the bluetooth connectivity by deleting it out of the Fitbit app and then deleting it out of the iPhone bluetooth setting and then re-add the Fitbit Charge 3 to the iPhone app again which generally works and then it syncs.

By the next day it all stops working again and I have to go through the whole process again. Its been happening for the past week. I have no other bluetooth issues with the iPhone and I only use the Fitbit with the iPhone. It sometimes comes up saying "slow sync". No idea what that means. 

I've restart the Fitbit several times but nothing fixes it.

Does anyone know how to solve this?

Moderator Edit: Clarified subject

[Akas]

hi @markyd it might be the internet problem or the connectivity

[AlvaroFitbit]

@markyd Thanks for being part of our Community! 

Let me help you with this. Besides checking for connectivity issues like @Akas mentioned I suggest you try clearing the link between your phone and your tracker by doing the following:

1. Go to your phone's bluetooth settings and remove all devices listed there.
2. Restart your phone and restart your device. 
3. Check that no battery saving app/feature on your phone is affecting your Fitbit app.
4. You can find troubleshooting instructions here.

Let me know how it goes.