Surface Duo comes with two 5.6″ displays. Each display has an aspect ratio of 4:3, a resolution of 1800×1350, and a pixel density of 401. Simply put, it means the displays are large and sharp.
By default, the display scaling (how small or large UI elements and text are on the screen) is set to be comfortable enough to look at without straining your eyes too much. You can change this, though, allowing you to display even more content on the displays while possibly sacrificing eye comfort, depending on the person. Here’s how.
Step 1: Open Settings.
Step 2: Tap Display, then Display size.
Step 3: Use the slider to change the setting from Default, to Small.
Note: The changes should take effect immediately, but if you don’t notice a change, restart the device.
Below are a few screenshots of the differences between Default and Small display scaling settings.
Microsoft News
Microsoft Edge (Desktop Mode)
Spotify
Calculator
Give it a try. I’d love to hear your thoughts on whether you prefer the default or the smaller scaling settings on your Surface Duo.
The Surface Guide 