Hi Christopher, also absolutely vital is to clean all surfaces with alcohol before trying to stick down. Also, I found that leaving the backing tape in place on the cable side until you have got the screen ribbons tucked in, really helps. Good luck ☺☺
If you’re replacing the battery anyway, it’s far easier to cut the wires to the battery first. Then you don’t need to worry about which one to desolder first etc.
The most testing issue is the removal of the tiny metal pin that holds the power button bracket. Most rear cases don't come with this pre-installed, so you'll need to transfer it from your old case. This was particularly difficult. It's so small that it's very difficult to get any tools on it and even if you do, there's very little room to get any real leverage to get it to move. The only thing that worked for me was to very carefully destroy my old case and try and cut away the area around the pin with a small pair of cutters (trying not to damage it). A bit of time and patience and it came free. Overall if you can follow the instructions in this excellent guide (and keep comparing your new and old cases) you should be able to get through this project without issue even if one or two steps are missing. Good luck!!
If you’re replacing the battery anyway, it’s far easier to cut the wires to the battery first. Then you don’t need to worry about which one to desolder first etc.
The most testing issue is the removal of the tiny metal pin that holds the power button bracket. Most rear cases don't come with this pre-installed, so you'll need to transfer it from your old case. This was particularly difficult. It's so small that it's very difficult to get any tools on it and even if you do, there's very little room to get any real leverage to get it to move. The only thing that worked for me was to very carefully destroy my old case and try and cut away the area around the pin with a small pair of cutters (trying not to damage it). A bit of time and patience and it came free. Overall if you can follow the instructions in this excellent guide (and keep comparing your new and old cases) you should be able to get through this project without issue even if one or two steps are missing. Good luck!!