Dear Samsung Member,
Greetings from Samsung Customer Support!
To resolve "display" issue kindly follow the given below steps:
1. Display brightness level:- Kindly set the device display brightness in auto mode (If available).
Steps to adjust brightness in auto mode: Swipe down on the home screen to open notification panel>Turn on Auto brightness.
2. Reset the device and before resetting the device make sure to create data backup of your device via Smart Switch mobile application or http://www.samsung.com/in/support/smartswitch pc suite.
Settings > General Management > 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.
Thank you for writing to Samsung.
Samsung Customer Support