If you have a fast and reliable Wi-Fi connection, the update will take less time, and you’ll experience fewer interruptions. The speed and strength of your internet connection play a significant role in determining the update time. If you own an iPhone 13 Pro or Pro Max, the update will take much less time compared to an iPhone 6. The update time varies from iPhone to iPad to iPod Touch. The newer and more powerful the device, the shorter the update takes. The hardware specifications of the device you are updating will determine how fast the process goes. Here are some of the things that might affect the time it takes to update your device to iOS 15.4: 1. The duration of the iOS 15.4 update depends on various factors. The OS updates also bring support for Sony's new DualSense adaptive trigger feature.What Determines How Long The Update Takes?.Apple has also added support to store EU Digital COVID Certificate to Health and Wallet apps with the new update.Apple has added a new Card Widget to iOS with iOS 15.4.Now you can turn off notification for personal automation in Siri Shortcuts.You can now create custom email domains with iCloud+.There's an option to activate SharePlay directly from the share sheet on other supported apps as well.

Now, you can directly open SharePlay and listen to your favorite songs with your friends right from the Music app.

Apple has added a number of improvements to SharePlay with iOS 15.4.

You can add notes to your iCloud‌ Keychain password by going to Settings → Passwords on iOS 15.4 and above. This makes iCloud Keychain service more like third-party services such as 1Password and LastPass. On iOS 15.4, you'll be able to save notes to password entries on iCloud Keychain.

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