Answer: A: You can’t. Currently, the latest version of iOS available for iPhone 4 users is iOS 7.1.

How do I update my iPhone 4 from iOS 7.1 2 to iOS 9?

Yes you can update from iOS 7.1,2 to iOS 9.0. 2. Go to Settings>General>Software Update and see if the update is showing. If it is, download and install it.

Can iPhone 4 install iOS 10?

Can iphone4 run iOS 10? The iPhone 4 does not support iOS 8, iOS 9, and will not support iOS 10. Apple has not released a version of iOS later than 7.1. 2 that is physically compatible with an iPhone 4— that being said, there is no way for you to “manually” upgrade your phone— and for good reason.