20 - 30 minutos
My phone was not holding a charge for very long...I was tired of being "tied" to a wall charger for half of my day.
First time through I received a bad battery. However I called customer repair and after a two minute conversation with an extremely helpful person a new battery was immediately dropped in the mail and got here two days later. One I had that the fix was all of 15 minutes.
Follow the guide---it is 100% accurate in every respect!! The Spudger is a great too--worth every penny.