I too am having the same issue with iPhone 5C lcd screen assembly. I have been getting my parts from a very reputable US supplier and have ordered about 10 of these screens and have had to return about 6-7 out of 10. The odds are not in my favor. I originally thought the problem was bad ic for lcd after 4 failed screens on same iphone all from same supplier. (highly unusual for this many defective parts in a row from this supplier) Since I don't have another iphone 5c to test my theory, I have recommended my customer to take the iphone to another repair shop and verify with a possible different supplier.