Originally Posted by Thug_4_Life
Sent from my HTC One
Okay, let's begin!
Stuff you'll need:
1x HTC One M7 Full housing (front + back), search on ebay.. Like this
Black sim tray (ebay)
A very small sized phillips screwdriver, and tweezers (or rather get a whole kit of that mini sized stuff :P)
Something like 5mm double sided sticky tape
Glue that melts on heating (not sure what exactly it is called), or superglue. I'd reommend the heat one though.
A hair dryer/heat gun
Old credit cards/guitar picks etc
A razor blade
If you think that you're gonna break your display anywhere along the process, even those are available on ebay for a decent amount.
Now, I watched these videos for reference:
Since your phone has been opened before, it's not gonna be as difficult as it looks in the video. What I did was pull out the volume button with my nail (the top of the button, in the middle), and once that is out, just inserted a card into the gap inside and pryed at the back, and eventually, it got off. Remove your sim tray before you start. Also, see the positions of the clips holding the housing, it'll make removing it much easier. For taking off the display, I'd say, use heat for a decent minute and half, or two, and use a suction cup. This is the only part which isn't made clear on any youtube video that I've seen, so be careful. You could also get your technician to just transplant the display to the new housing.
Any way, ask away if you have any questions, and good luck!