Dear Samsung Member,
Greetings from Samsung Customer Support!
Kindly follow the below mentioned troubleshooting steps and be assured it would resolve your issue:
1) Update your software(If available):
Settings > Software update >Tap on Download and install > Check for software update > Tap on Download > Download update > Tap on Install now.
2) Reset the device:
Navigate to apps screen and tap on Settings > General Management > Reset.
Note: Please take backup of the date before resetting the device.
If the issue still persists, kindly attach the log file and send it to us in the Samsung member application(attach when the issue occurs within first 15 minutes of the occurrence of the issue.):
Samsung Members App > Feedback >Error report > Attach log file.
Thank you for writing to Samsung.
Samsung Customer Support