Smashed front iPhone 4 screen.
Fixed it for family member.
Took about 2 hours.
The spudger tool (blue plastic opener) was a must have to not bend or ruin any of the thin metal plates holding the logic board and others in place.
Taking the Logic Board out is much easier than putting it back in.
And those damned screws with the washer rings on them are hard as !&&* to get back on as they are small length wise and the washer needs to be there.