I fixed my old iPhone 4s for my side hustle.
The battery replacement went smoothly. I brought up the video on my 2007 Mac Book I recently upgraded and watched it quickly before going in. Every thing went well I even read through the step by step before closing things up just to make certain the job was finished. Powered the 4s up and could not be happier. My wife said should we should have kept other phones for fixing. I am 50+ and loved learning how to do this. Looking forward to fixing my 16 year old's iPhone 6.
Anyone can do this. Loved the encouragement on the card board box.