To get started, launch the “Settings” application. If you can’t find the app, from the homescreen, swipe down on the phone’s display and use Spotlight to search for “Settings.”
Next, scroll down and tap on the “General” option.
Third, select “About” from the top of the list.
Now that you’re on the About screen, you can see the “Model Name” and “Model Number” of your iPhone.
The Model Name of your iPhone is all you should need to know when buying cases and other accessories specifically designed for your handset. The Model Number is information that only Apple might need.