I have had the same problem for over a month! I have the blaze and then I upgraded my phone to the Samsung Galaxy s8 and I no longer received any notifications. I tried restarting my phone, uninstalling the app and reinstalling it, deleting the blaze from my fitbit account and re-adding it, I checked to make sure Bluetooth was working properly and nothing has fixed it. I even contacted Samsung and they came me a list of items to try and this is what I got:
Follow the below troubleshooting steps on the S8 to isolate the issue.
1. While the phone is turned ON, press and hold the power button and the volume down button for 7 seconds to perform a soft reset on the phone. It will refresh the internal circuit of the phone.
2. Reset Bluetooth connectivity. It will not erase the paired Bluetooth devices on the phone. Go to Settings > Apps > More(three dots) > Show System Apps > Bluetooth > Storage > Clear Cache > Clear Data.
3. Perform Reset App Preferences. It will reset the app preferences to default. Go to Settings > Apps > More(three dots) > Reset App Preferences > Reset.
4. Update the software. Go to Settings > System Updates > Download Updates Manually and update the phone if there is an update available.
5. Launch the phone in safe mode. Launching the phone in “Safe Mode” will disable(not delete) the downloaded apps on the phone. You will be able to detect if the issue is triggered by installing any third party app. It will not delete any data from the phone. Launch the phone in “Safe Mode” by following the below steps.
a) Power the phone off then power it back on.
b) Press and hold Volume Down when the animated Samsung logo appears.
Important: If you use Fingerprint or Iris security features the device will require the backup password to unlock after rebooting.
c) The Phone is now in safe mode. Safe Mode will appear in the lower left corner of the screen.
Note: To exit from “Safe Mode” please restart the phone.
Please check if the issue is resolved in “Safe Mode”, then remove the third party applications to resolve the issue permanently.
6. If the issue persists in Safe mode, please backup the phone data to a computer using Smart Switch. Please download the software from the below link. This software is available for both Mac and PC. It helps to create a complete backup of the phone.
Link: http://www.samsung.com/us/smart-switch/
7. Then follow the steps to perform a Factory reset on your phone. These steps will completely reset the phone, deleting ALL settings and all data on the phone (including phone book entries, pictures, games, and messages).
Note: Please go to Settings > Cloud and Accounts > Accounts and remove the Google and Samsung accounts before performing a Factory reset to avoid factory reset protection lock or reactivation lock.
From the home screen go to Settings > General Management > Reset > Factory Data Reset.
If the issue persists, please contact the manufacturer of Fitbit and Car to check if they support the Bluetooth version and profiles of S8.
I did everything on this list EXCEPT factory reset my phone which I refuse to do. So basically fitbit says it's Samsung's problem and Samsung says it's fitbit's problem.
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