I have just ordered a U2717D and noticed it has several issues.
Top left and right corners are lit yellow. Right corner lit more.
Bottom corners are lit blue.
I take photos with black background and with lighting and without lighting in room. Photos show that what I see real.
Its normal or it has defect?
Based on those pictures, it is not defective and passes our manufacturer specifications for uniformity. We could not issue an exchange. If purchased directly from Dell, you may return it for refund inside the first 30 days from the invoice date. If purchased from a reseller, check their return policy.