Try wiping the cache partition of the entire device.
Here are the steps:
1. Turn off the device.
2. Press and hold the Volume Up key and the Bixby key, then press and hold the Power key.
3. When the Android logo displays, release all three keys.
4. An ‘Installing system update’ message will show for 30 – 60 seconds before the Android system recovery menu options appear.
5. Press the Volume down key several times to highlight wipe cache partition.
6. Press the Power key to select.
7. Press the Volume down key to highlight yes, them and press the Power key to select.
8. When the wipe cache partition is complete, Reboot system now is highlighted.
9. Press the Power key to restart the device.
Let's try resetting your connection, Give this a try:
Settings>Apps>Three dot menu>Show system apps (Making sure your Bluetooth application appears in the list)
You would want to focus on the main Bluetooth application with the Bluetooth logo.
You would want to Force stop your Bluetooth, Clear the cache and the data of your Bluetooth.
Restart your device and test your connections now.
Hope this message finds you well!
I would be happy to look into your concerns.
Can you please send me a private message with the below information here at this link: http://bit.ly/2GH8URL
(15)Digit IMEI Number: