Chosen Solution
So I just noticed, 3D Touch does not work uniformly on the screen. Does that mean it’s broken or a connector loose? I also noticed the rainbow effect in the areas where it’s not working. thanks!
I doubt it’s a connector issue, it’s probably just a screen issue. Now the important question…is this the original screen or has it already been replaced? Either way will require a new screen but if it was replaced, it may still be under warranty with the repair shop.
