Note - The steps to delete an app off your iPhone vary based on the model. Earlier versions use a an X and have a home button. Newer models use a hyphen and offer options.
1. Locate the app you wish to delete.
2. Lightly tap the app icon and hold. The app icon will wiggle and an hyphen or an X will appear.
Alternatively, newer iPhones have the options: Remove App and Edit Home Screen or Share options.
3. Touch the hyphen (or X) on the app icon to delete it. Select Delete App to verify.
4. When finished, return to your home screen.