30 - 45 minutes
Dropped my phone in a shallow pool of water and it stopped charging again. It kept notifying me that the 'Temperature is to Low' on my screen every time I attempted to charge it. I replaced the battery first but that did not resolve my issues. I then found this site and saw how easy it is to replace the internal working parts in my Galaxy S4.
The repair went mostly smooth. I had an issue with separating the back from the front casing. I accidentally started taking the actual Glass off, thinking the 'bezel' the directions were talking about was at that point. It looked wrong before I actually got the glass off. Had to look up more details about it and was finally able to distinguish the difference. The bezel was actually along the side of the phone, not near the front side of it. After that, the replacement was a piece of cake!
The spudger and plastic opening tools are worth their price to purchase! Made my job easier.
iFixit Opening Tool
Galaxy S4 (AT&T/T-Mobile) Charging Assembly