Apple Releases iOS 9.2.1 with Bug Fixes and Security Updates
Apple has recently released iOS 9.2.1 to users worldwide.
According to Apple, iOS 9.2.1 contains a number of security updates and bug fixes, so it is recommended that you update as soon as possible.
iOS 9.2.1 is compatible with iPhone 4S, iPhone 5, iPhone 5c, iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPad 2, 3, 4, iPad Air, iPad Air 2, iPad Pro, iPad mini, iPad mini 2, 3, 4, iPod touch 5G and iPod touch 6G.
You can upgrade to iOS 9.2.1 using the Software Update section on your iOS device or via iTunes. Below you will find the instructions.
Update the iOS software on your iPhone, iPad, or iPod touch - Apple Support
Below you can take a look at the security content of the latest update: