Battery drains quickly on iPhone/iPad. Fixed “iOS/iPadOS 15.4” released.


Last Updated on 04/01/2022 by てんしょく飯


Apple has launched iOS 15.4.1 and iPadOS 15.4.1, which fixes an issue that causes the battery to run down faster than expected.



Fixed an issue where the Braille device stops responding while navigating text or displaying notifications.

For both iPhone/iPad, after updating iOS 15.4 and iPadOS 15.4, the battery drains faster than expected, the Braille device stops responding during text navigation and notification display, and the Made for iPhone/iPad hearing aids and some third-party apps Fixed a problem with disconnection.


Other security fixes include addressing a vulnerability that could allow an app to execute arbitrary code with kernel privileges by writing outside the realm. Affected are iPhon 6s or later, iPad Pro (all models), iPad Air 2 or later, iPad (5th generation or later), iPad mini (4th generation or later), and iPod touch (7th generation or later).