Chosen Solution
To be more specific, it sometimes does charge inexplicably, but it takes around 20 minutes just to get 4% more charge, then it loses charge for no reason! When it does charge, it doesn’t show the lightning bolt! I got the charger cable and it said it worked on both iPhone 5 and iPhone 6, it didn’t say anything about iPhone 5s but I just ignored that fact because it’s almost the same thing as an iPhone 5. I don’t know if that’s the problem, but nevertheless I need help now! This is getting ridiculous and I’ve only had the new cable for about 3 days!
You most likely have a bad charging port. You need to replace it and see if that will fix the problem If not than your U2 chip or charging IC may have gone bad. Usually it goes bad when using none apple charging cable or block.
