15 - 30 minutos
The dregs of a soft serve cushioned the fall of my iPhone four into a cup. The power lock button got jammed up with goo.
The guides were great. The tiny long screw at the top flew across the room as I took it out but luckily I found it about six feet away. Works as good as new now!
Keep the screws in their respective locations so they go back into the correct holes.