iOS 16 is installed on the iPhone. Apple just released a software update to improve stability and security. The most recent stable version is iOS 16.3, which fixes a few issues and includes new features, including as the option to activate 2-factor authentication using a physical security key.
The iOS 16.3 upgrade is around 600MB in size for people who are already on iOS 16.2. This update includes all of Apple’s recent security enhancements to make iPhone and other devices a little safer, such as end-to-end encryption on iCloud, physical key-based 2-factor authentication, and an updated emergency SOS functionality.
iOS 16.3 introduces two new unity wallpapers, accessible via the settings menu and the lock screen. Here are some details about the most recent iOS 16.3 software release. Apple has also released watchOS 9.3 for a select few Apple Watch devices.

Which iPhone models are supported by the iOS 16.3 update?
The iOS 16.3 update is available for all iPhones running iOS 16. As a result, the iOS 16.3 update is compatible with both the iPhone 8 and the iPhone SE 2nd Generation. iOS 16.3 is also compatible with all iPhones released after the iPhone 8. Keep in mind that some iOS 16.3 features will only be available on the most latest devices.
How much big is iOS 16.3?
For those who are currently using iOS 16.2, the iOS 16.3 upgrade is around 600MB. If you have a 5G iPhone, you can download the update via a cellular or Wi-Fi network. For non-5G iPhones, iOS 16.3 must be downloaded and installed over a Wi-Fi network.
Should you update your iPhone to iOS 16.3?
Yes, iOS 16.3 is a stable update, and Apple recommends that every iPhone user with a supported model instal it. Apart from delivering new capabilities, iOS 16.3 also improves general user experience; so, it is recommended to instal the most recent available software update on all devices, not only iPhones.
The iOS 16.3 update’s highlights
Some of the most notable features of the iOS 16.3 release are as follows:
End-to-end encryption is now available in 23 categories, including iCloud backup, Notes, and Photos. According to Apple, this will protect customer data even if there is a cloud data breach.
Apple ID Security Keys will also be available, allowing users to boost account security by requiring a physical security key as part of the two-factor authentication sign-in process on new devices.
The update will provide HomePod support (2nd generation)
To avoid unintentional emergency calls, emergency SOS calls will now require holding the side button with the volume up or down button and then releasing.
Additionally, it fixes a problem where “some sketching strokes made with Apple Pencil or your finger may not appear on shared boards” in Apple’s Freeform app.
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