I have had the same issue with the 7. Some vendors make these screens not up to Apples specifications. The 7's and above are harder to manipulate, so I have resorted to buying them from here. I usually buy from FixeZ, but they are having troubles at the moment with their stuff. Have received many bad parts that have had that issue or couldn't fit in the phone right. I just decided to increase my prices and buy them from here because I haven't had an issue yet. Sucks buying them for a high price but ifixit has them right and won't have 2-3 bad out of a batch of 5 from here.