Apple hastily released a pair of updates for iPhone and iPad that fix several security flaws, including a Safari bug that lets websites you visit see your browsing history and other personal data.
iOS 15.3 and iPadOS 15.3 fix the Safari issue, as detailed by 9to5Mac, as well as several other vulnerabilities in ColorSync, iCloud, and other software as detailed on Apple’s support page. Don’t expect any new features, as these software updates only fix a handful of current issues.
Like all other iOS 15 updates, iOS 15.3 is free and available for compatible Apple devices: iPhone 6S and newer iPhone SE (2016) and iPod Touch (7th generation). Likewise, iPadOS 15.3 is free and compatible with these tablets and newer: iPad (5th generation), iPad Pro (all models), iPad mini 4 and iPad Air 2.
To update your iPhone or iPad, go to the Settings app > General > Software Update and tap Install now.
Apple also began rolling out watchOS 8.4 to Apple Watch users in a separate update that fixed bugs and improved performance. To update your Apple Watch, go to the Settings app > General > Software Update, or do the same through the mobile Watch app on your paired iPhone.