The replacement screen comes packaged very well and with all the tools to do the operation unless a conventional screwdriver to remove one of the screws on the inside so if you do not have at home you expect to have one before begin to dismantle.
The outside screen is identical to the original. There really is no difference with the old. Thickness, color, size, everything is really the same. Once verified that (as some reviews said that there were differences) I decided to replace my screen. If you have a little practice with this stuff generates replacement is really simple.
I turn on the iphone and all is well. By cons I notice that:
1) the colors are not exactly the same as before
2) the colors and brightness change according to the vision of nail. They remained almost unchanged with the original screen.
3) Some application / menu (the slide to unlock, for example) have halos lap as if the screen had fewer colors than the original
4) The hit is not the same either. The new screen is more sticky fingers and leaves more traces
A by AC else is impeccable. I recommend changing the screen only if the original is seriously damaged.