iPhone 6 lcd issues
Hello guys, i need help because i cant find a answer for this. So i changed a lot of iphones screens from 3gs to 6. And now when i changing the lcd for last three iphones (2x5s and one 6) had some strange promblem. When i put all back, start testing it i saw when i push screen they have some yellow/blue marks on the same second when i push it. on the corners or near the home button. Maybe somebody know the answer? It can be for bad metal frame? Because im starting to give up.
Is this a good question?