Dear Samsung Member,
Greetings from Samsung Customer Support!
To resolve display issue kindly follow the given below steps:
1) Reset the device: settings >General Management > Tap on Reset.
Note: Before reset make sure to have back up of the data via Smart Switch Mobile App
(Install Smart Switch App > Open > Click on Memory Card Icon >Back Up option > Choose the data for Back up > Back Up).
If the issue still persists, we request you kindly visit the service center as your device needs physical inspection. To check for the nearest Samsung service center kindly click on the link : https://www.samsung.com/in/support/service-center/
Thank you for writing to Samsung.
Samsung Customer Support