My iPhone 14 pro battery is dying faster why?
It has been happening for the past 2 weeks before that it was fine.
if it has 40% charge and I don’t charge it overnight, in the morning is off and that was not happening before
iPhone 14 Pro, iOS 16
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Something is using energy overnight. You can get a hint about which app it is by going to Settings/Battery. But you should be charging your phone overnight, every night.
The absolute best way to get maximum use on a charge, as well as slow the decline of battery capacity long term is to enable Optimized Battery Charging (Settings/Battery/Battery Health) and charge the device overnight, every night. The battery will fast charge to 80%, then pause. During the nighttime pause the phone will use mains power instead of battery power, allowing the battery to “rest”, and thus reducing the need to charge the battery quite as often. The phone will resume charging to reach 100% when you are ready to use your phone; it will “learn” your usage pattern. If you enable iCloud Backup (Settings/[your name]/iCloud - iCloud Backup) the phone will back up overnight also, assuring that you can never lose more than the current day’s updates. Here's more information→About Optimized Battery Charging on your iPhone - Apple Support