The iPhone has been around for about 11 years and has gone through many changes, but that doesn’t mean it’s easy to tell one iPhone from another. There has been 18 different iPhone models that have debuted since 2007.
Each iPhone has its own “A” model number, and this number is often printed on the back of the phone itself in teeny tiny print which can be difficult to see even for people who don’t have any vision loss. In the case with the iPhone 8 and iPhone X, you can find it in the Settings app.