I replaced the screen because it didn't detect touch in several areas

Once I changed the screen, different parts of the screen stopped responding to touch, and I am wondering if the replacement screen I got is also faulty?

In this first image I have the original screen and you can see two columns along the phone where touch don't work.

In the second image I have the replacement screen, the entire top half of the screen responds to touch perfectly but the bottom half is completely dead.

Could this be a faulty replacement? The pin for the digitiser looks fine, no sign of any bent pins. If it seems to be an issue with the replacement screen how would I go about replacing that?

Thank you