Look very carefully at the actual replacement part before starting and try to understand how it folds and wraps around the earpiece. (the part from fixit comes flat- if you orient it with the round power switch toward with upper left, the rectangular piece in the center with a hole in it is where the earpiece is attached with sticky foam. The bottom right "leg" folds up and over the earpiece and attaches to a bracket above the earpiece, held down by a metal clip. The left "leg" is in approximately the right position but has 2 right angle bends in the final 3d configuration ending in a plane higher than when flat. The upper left "arm" folds up and wraps over the plastic power button bracket.)
The last steps made a lot more sense after I got this, but I had to disassemble it to understand and had torn one of the ribbon in the process, lucky I was replacing it anyways.
I agree with comments made.
This is more than moderately difficult.
It is doable, but not if you have never done any repairs, have short patience, or don't have micro tools.
The parts are much smaller than older iPhones i've worked on. I could not have done it without head magnifiers. I have 40+ year old eyes, your eyes may be better.
A phillips 000 worked better for me throughout in place of 00 phillips.
Mine was stuck to the cover too, thanks for posting.
Based on comments here, I skipped this step fixing the power button and it was fine, you have a little less room to remove the earpiece wrapped in the power cable but if the removal was as hard as people describe, it was easily worth it.
I tried this and it worked, thanks. I was worried with the comments about damaged video connectors, but everything luckily worked after putting it back together and powering on.
I tried this and it worked easily. Thanks for the tip.