Apple has released iOS 15.4.1, a bug-fix update that resolves iPhone battery drain while addressing issues with some Braille and MFi hearing devices.
iOS 15.4.1 addresses iPhone battery drain (and iPad, too)

Apple has released iOS 15.4.1, a bug-fix update that resolves iPhone battery drain while addressing issues with some Braille and MFi hearing devices.
Apple has released iOS 15.4 for the iPhone and iPod touch, as well as iPadOS 15.4 for iPads, bringing new features such as unlocking your iPhone with a mask on.
In light of actions taken against Ukraine by Russia, many companies and agencies all across the globe are reacting. That includes now a direct response by Apple, who has decided to stop sales in the country from its online storefront.
You can now preview Apple's new less-gendered Siri voice in iOS 14.5 that isn't explicitly male or female on your iPhone before the software update goes live.
The official Apple Support app has been updated with the ability to get price estimates for common repairs such as fixing cracked iPhone screens or replacing batteries.
iOS 15.2 and iPadOS 15.2 have resolved a previously unknown privacy issue with Siri voice recordings being uploaded to Apple's servers even when you opted out.
With the power of Apple's Shortcuts app, you can create a simple workflow script that will enable you to preserve the original game and play Wordle forever in offline mode.
Apple with iOS 15.4 has reportedly fixed a Core Animation bug that has resulted in a sub-par ProMotion experience. Now all third-party apps automatically use smooth 120Hz animations on iPhones that feature support for ProMotion display technology.
Apple's iOS 15.4 and iPadOS 15.4 updates, currently in beta, apparently feature support for receiving web notifications in the Notification Center on your iPhone and iPad.
Developers can now publish unlisted iPhone, iPad and iPod touch apps on the App Store that don't appear in search results and are only discoverable through direct links.
A new feature in iOS 15.4 and iPadOS 15.4 for using Face ID while wearing a mask requires at least the iPhone 12: it won't work on the iPhone 11 and the iPhone X or older.
Think twice before concluding there's nothing new to learn about editing iPhone alarms. If you have iOS 15.0 or later on your iPhone, use this handy tip to quickly edit an alarm.