It's of small size, right? So use it for as long as possible and upgrade the device. Because the only option is to change the display, which will cost you around 6/7k with gst and service charges.
Nb: You will be able to use it for atleast 1 year before the display becomes unusable.
Nope, the only option is to replace the full panel, sorry. But you can confirm that by visiting an authorised service centre. Meanwhile, can you post a photo of the display here(in the comments itself)?
We acknowledge your query and apologize for the same. We request you to kindly visit the service center for a physical inspection of your device. You can locate your nearest service center with this given link: https://www.samsung.com/in/support/service-center/
