My wife dropped her iPhone and broke the display. Disposing of a perfectly functioning phone because of some broken glass turned my stomach, so I picked up the replacement screen.
The repair went well, even though our cats hindered the process by trying to assist. I also, during the course of reassembly, dropped three different screws and spent at least an hours time on my hands and knees searching for them.
The directions provided in the guide were perfect and made the whole process a 'no brainer'.
my advise is to also purchase the screw set for the phone.