A useful accessibility feature that wasn’t available on the iPhone X has returned on the iPhone XS Max. Display Zoom makes content on the screen appear larger than the default resolution and is ideally suited for those with sight issues. 

Located in the Settings app under Display & Brightness, Display Zoom shows less content on the screen. Because it’s zoomed, however, the content is larger.

Take a look:

As you can see, the difference between the standard and zoom view on the iPhone XS Max isn’t very distinct. 9to5Mac rightly explains:

The effect Display Zoom has visually is less dramatic on iPhone XS Max (and likely iPhone XR) however, as the jump from 4-inch screens to 4.7-inch and 5.5-inch screens is more dramatic than 5.8-inch screens to 6.1-inch and 6.5-inch.

Display Zoom was introduced on the iPhone 6/6 Plus in 2014 and remains on the iPhone 7/7 Plus and iPhone 8/8 Plus.