Successfully replaced power and sensor cable plus power button. I read up all the notes and took this into consideration and rightly so. For me a job not to be hurried. I left the front camera in place but did remove the front screen just to have a look and it made it easier to access the button screws. My MO was to strip down this phone, leave it, and consider any potential failure in my workmanship. This approach works for me. Next day (today actually) all went together and Bob,s your father……Thanks for the tutorial ifixit.