A little update, I sent paypal some of the proof that I had "Conversations with other members of ebay with similar problems with this buyer, and other proof that I can't discuss". I also sent them an affidavit explaining the problem, they will investigate and let me know the outcome, I have been holding back of messing with this guy if paypal decides on my favor I will leave things like it is, if paypal decides to his favor, I for sure will not sell more on ebay or receive payments thru paypal, and I will make sure this guy never scam someone else in the future.
I just took the phone to my old job and used their microscope camera and you can see that screws of the cover have dust acumulated inside the philips head and you can notice that the screws were removed recently because of the scractches on the screw and dust. also the surroundings of the hole were the screw goes is scracthed on the edges meaning that someone used a big screwdriver and scratched the plastic surrounding while taking the screw out. I have never touched those screws.