Galaxy A7 Amoled Display intensity is not uniform. Why?? please tell the soln..

[Dazzle0105]

Watch the top left corner..when the screen is on dark grey color..top left corner goes black and remaining display shows the original color..

[mukunth01]

please like my post also🙏🙏 https://r2.community.samsung.com/t5/Galaxy-Gallery/happy-diwali-to-all-Samsung-members-friends/td-p/...