10 Things to Know About the iPhone 4s iOS 9 Update

You Can Still Downgrade to iOS 8

If you're nervous or if you're already hating the iOS 9 update, know that you can drop back down to iOS 8.4.1, the update that came before iOS 9. 

Apple's still signing off on iOS 8.4.1 which means you can downgrade from iOS 9. This option will only be available for a limited time so you'll want to act fast. Apple typically stops signing one to two weeks after an iOS release. 

For more on the downgrade process, take a look at our step-by-step instructions. The process is a little involved but they could come in handy.