My iPhone 12 battery health is at 96% and chargers fine until I updated to iOS 14.6. My phone charged over night and the battery % is only at 30% and keeps on draining. Is anyone having the same issue after updating to iOS 14.6?
Turn off optimized charging. Push volume up, volume down then hold power button until the Apple logo shows. Do not slide the bar to power off. Then plug in directly to lightning cord. If problem continues after a day or so look at Apple support page for their solution.
Same issue with my iPhone 8, it happens after the recent iOS 14.7.1 update though. Works fine at 14.6 despite often too hot when charging.
Several times my phone would be forced to shut down at 40% battery, it appears 10% when I plug in and restart.
Seems nothing I could do about it, sadly not much useful information on the Apple support page.
ISO 14.6 battery drain and not charging
