There are a few ways to measure elevation on an iPhone. The most common way to measure elevation is to use the accelerometer. To do this, you need to open the Settings app and select “General” then “Accessibility.” In the Accessibility section, you’ll want to select " Accelerometer." Then, in the next screen, you’ll need to specify how far up or down you want your iPhone to measure elevation. For example, if you want your iPhone to measure elevation up 1 foot, then enter 1 in the “Location” field and click on “OK.” If you want your iPhone to measure elevation down 10 feet, then enter -10 in the “Location” field and click on “OK.”
