Here’s my iPhone before and after the latest update to iOS.

[![iPhone OS4 update combined images](https://i0.wp.com/res.cloudinary.com/r12s/image/upload/v1501372490/iphone_updateOS4_egy6pv.jpg?resize=600%2C400 "iphone_updateOS4")](https://i0.wp.com/res.cloudinary.com/r12s/image/upload/v1501372490/iphone_updateOS4_egy6pv.jpg)Before the iOS 4.0 update (left) and after the 4.0.1 update (right) - the only thing that had changed was the firmware