Blue/purple marks on screen when slight pressure is applied on it?
I have an iPhone 6 which I did a screen replacement for. When ever I snap the screen onto the phone fully and put some pressure on the screen-- blue/purple marks show up. There's one in particular that shows up right above the home button and appears when there is a slight pressure applied on the bottom part of the screen. Pressing the home button with more than just a finger nail triggers this too. So now, whenever I press the home button, the mark appears.
I have tried to see if there is anything under the screen causing this and I couldn't find anything. I attached the screen to a different iPhone. The problem was still there, the marks showed up in the same place too.
I ordered a second screen from the same company, and it also had the same problem with the marks in the same place. Albeit, the new one didn't have marks that were as dark as the other. But they both only had this problem when the screen was snapped into the iPhone. When it's detatched from the iPhone, it is completely fine--no marks appear from pressure.
What could be causing this? Am I doing something wrong?
Is this a good question?