Why would anyone care so much as to why doing this would cause such critical issues. There is one thing about these two models screens that have little to no difference in them, therefore 100% optional on which to buy for your phone model and that is the price. I could see such questions being asked if the iphone 8 screen was significantly higher than the 7. Or vise versa. But they are identical in price so, why would you ever give a $@$* if the connectors were the same? Just buy the appropriate screen and it will never matter if they are cross compatible. I get that maybe you didn't have the correct one. But get amazon then and tomorrow you'll have the correct screen for your model.