Apple has rolled out emergency updates for the iPhones, iPads, and Macs last March 31.
The update aims to fix a security vulnerability that’s already being exploited by some hackers and cybercriminals.
You should update your Apple smartphone if you own the original iPhone SE, iPhone 6s, and other newer devices, even the latest iPhone 13 series.
Users of the 7th-gen iPod Touch, all iPad Pro models, iPad Air 2 and later, iPad mini and later, and iPad 5th-gen and later should also update their devices as soon as possible.

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Mac users who are using the Monterey build should also make sure they update to the latest operating system version.
If your devices are on auto-update and you’re not sure if you’re already safe from the vulnerability, you should check the current version of your OS. If you own an iPhone, the software version should be iOS 15.4.1, iPadOS 15.4.1 for iPads, and macOS Monterey 12.3.1 for Macs.
To check what OS version you have, simply go to Settings > General> Software on your iPhone or iPad, while Mac users can go to System Preferences > Software Update.