20 - 30 minutos
My IPhone 3GS wasn't holding much of a charge.
When I told my wife I was going to do the repair myself she just rolled here eyes and hinted at some of my other home project failures based on brute force issues. I'm the guy who just broke the pizza cutter! I followed the wonderful instructions and had no problems. This was a simple fix that anyone can do.
I picked the basic tool kit only because It was cheap and wanted it around the house. I used the suction cup and the spudger from the set, but could have got by without it.