Worked. Tend antenna shield. Stay w/pentalobe screws. Leave on charger 30 min.
10 - 30 minuten
iPhone 4s battery poor capacity, would discharge within 12 hours of minimal use. Not unexpected as the device was given to my teenager by my coworker. It was his son's phone and was sitting in a drawer for some months or longer.
The tool kit was excellent. Opening and closing the phone was straightforward. However, I expected more of a warning (maybe even printed) about the little antenna shield piece that came loose upon disassembly. I had to google several sites to find a clear picture of that little piece so I was confident enough I had reinstalled it under the proper screw and in correct orientation.
First. Don't bother with the 'liberation' screws. I retained the original pentalobe screws. The provided Philips head 'liberation' exterior screws did not feel as smooth as I wanted and I was fearful of stripping or cross threading the threads in the device. They would go in about 90% but not smooth enough for my comfort.
Second. Pay careful attention to where and how the antenna shield piece is attached BEFORE you disassemble the battery terminal screws.
Last, but not least, don't fret if the phone shows minimal (1%) charge upon initial charging. Our device would not power up for about 20 to 30 minutes but we left it on the charger. Eventually, the phone turned on and after turning on/off a few times it found the network and has been working fine since. Had me worried for a short bit but it worked out fine. Our ifixit provided battery was marked 12/2013 and we purchased 03/2015 so I was a little concerned. Oddly, the OEM battery was a 12/2012 but again, that device had sat in a drawer unused for many months per the person that gave it to us.