Please be assured and to resolve "Bluetooth connectivity" issue kindly follow the given below steps:
1) Safe mode:-Power off the device > Press and hold the Power key for one or two seconds to turn on the device > When the Samsung logo appears, press and hold the Volume down key. Note :-To exit safe mode restart the device .
2) Clear cache and data of Bluetooth app data:-Settings >Apps >Menu (Three dots) >Show system apps >search and type "Bluetooth" >Bluetooth >Storage >Clear cache >Clear data >OK.
Tap on Settings>Tap on General Management>Tap on Reset.
If the issue still persist, kindly register your concern in Samsung Members app (Samsung Members app > Get help > Feedback > Error report/ask question). Note: Please send device log files within 15 minutes of issue occurrence along with the exact issue details.
