Unable to sync Blaze with iPhone XS

[Salou_f80]

I’ve upgraded to an iPhone XS, have managed to pair my Fitbit Blaze to the phone, but now the app can’t find the Blaze to sync.

i’ve reset the blaze, restarted the phone, uninstalled and reinstalled the app, but no success.

I there anything else I can try?

Moderator Edit: Clarified Subject.

[MarcoGFitbit]

Hello @Salou_f80, thanks for joining the Fitbit Community, it's great to have you on board the Fitbit Community. 

I appreciate your participation in he Forums and for sharing your experience with us. I would also like to thank you for sharing the troubleshooting steps you've tried already. At this moment, if you have your old phone with you, please go to the Bluetooth settings on your phone and check if your tracker is on the list of paired devices. If it is, tap on it and select Forget this Device. After that if you're still have trouble syncing, please try the following:

• Make sure the latest version of the Fitbit app is installed on your phone.
• The software on your mobile device is up to date. To check, tap Settings > General > Software Update.
• Make sure there are no other Bluetooth devices around as they might interfere with the syncing process
• Check that your Fitbit device's battery isn't critically low.

If your device still won't sync, try these steps:

1. Force quit the Fitbit app. 
2. Go to Settings > Bluetooth and turn Bluetooth off and back on.
3. Open the Fitbit app.
4. If your Fitbit device didn't sync, restart your phone again.
5. Open the Fitbit app.
6. If your Fitbit device didn't sync, restart it one more time.
7. If your Fitbit device won't sync after the restart, log in to your Fitbit account on a different phone, tablet, or computer and try to sync.
8. If your Fitbit device still doesn’t sync, remove all other Fitbit devices from your account and from the list of connected Bluetooth devices on your mobile device and try to sync.

I hope this can be helpful, give it a try and keep me posted in case you need anything else.