Hello every one,
I would like to say that I solved the problem by changing out the sensor. The parts I'm currently using for Iphone 6 are original, so no worries about quality. I have no idea why/what caused the old sensor to stop working as I inspected it very closely with the new part I bought and they were identical.
However, after several hours of changing back and forth I deemed the old sensor broken and replaced it.
Thank you for your tips reguardless and I apologize for my late reply. :)