Hello and welcome @Fate
I understand your experiencing connectivity issues. You didn’t mention which Fitbit Tracker you have but did mention you have a new iPhone 11. I first looked to see if your iPhone 11 is compatible with the Fitbit App. It is indeed compatible which is great news. Before starting these steps do make sure that your iPhone and the Fitbit App is updated.
Please try restarting your Fitbit Tracker first. Look here to find the correct way to perform a restart: https://help.fitbit.com/articles/en_US/Help_article/1186
If your still experiencing issues try turning your Bluetooth off, restart your iPhone then turn your Bluetooth back on again once your iPhone restarts. Again, try to sync
If restarting and toggling the Bluetooth doesn’t help I would suggest force shut the App and restart. Here’s how:
Again, Turn off your Bluetooth
log out of the Fitbit App
completely shut down your device, wait 1-2 mins then restart your device
once your device fully loads enable your Bluetooth again
now log back into your Fitbit App as you normally would with your email address and password
now sync your device
If your syncing is still failing let’s try reinstalling the Fitbit App. You will not lose your data doing this.
Here’s how:
1. Log out of the Fitbit app and force shut the app by swiping up
2. uninstall the Fitbit App from your device
3. now completely shut down your device and wait about 1 min then restart your device
4. once your device has reloaded reinstall the Fitbit app by downloading it from the App Store
5. once it’s installed, log into your device as you normally would with username and password
6. don’t touch anything in the app...just wait until you get a prompt from your Bluetooth.
7. When prompted by your Bluetooth tap yes
8. now try to sync
If your still experiencing an issue try this last step: please go to the Bluetooth settings on your phone and remove the tracker. In the list of Bluetooth devices you'll see the Fitbit Tracker and next to it, this symbol "!". Hit the symbol and it will take you to the next step, once you're there select the option that says "Forget this device" or "Unpair". Once you've made sure about that, go back to the Fitbit app,, tap your profile picture then scroll down and select "Set up a Device". This should start the setup process for your device. Just follow the instructions as they come.
If the issue is not solved after the above steps, please take a look at the help articles: Why can't I set up my Fitbit device? or Why won't my Fitbit device sync?
😃 Please let me know if this helped in anyway.
