Chosen Solution
I have an iPhone 6 and it randomly started to bootloop.I knew it was a battery issue, So I went into battery health and it was just loading.So I went to the same place I got my phone battery replace and they replaced it again.Everything was going great until my iPhone was at 4% and it randomly died.I plugged it in but instead of showing the low battery logo it showed the apple logo and it was at 4% instead of 1%.What should I do?
Try calibrating the batteryRun it down until it shuts off,Then charge it up to 100% uninterrupted then keep it plugged in for 2 more hours,Run it down till it shuts down,And finally, charge it uninterrupted to 100%