this was by far the most difficult part. be diligent and follow the “firm and constant pressure” guide... the “gap” will be extremely “slight”. you will be able to slide a corner of the pry tool even if you cannot see the gap.
I bought a cheap, cheap, cheap replacement screen from somewhere else, and didn’t realize that i also had to switch over my earpiece, sensor, backplate, etc. it was a big surprise but with the help of the other tutorials on this site I was able to complete it! the screen quality is a lot lower than expected, a tad fuzzier, but you i got what i paid for. great info!!
the use of a CLEAN (with isopropyl alcohol) credit card was very helpful when reapplying the thermal paste, be sure to have this “tool” on hand when reassembling.
i found that it was difficult to get the processor back inside correctly during reassembly. it might take a few tries, as there are small “bracket” type pieces on the underside of the i/o ports that may bend out of shape. use caution, be exceedingly gentle and patient, but don’t give up!