A free app for Android, by chornerman.

This application may brick your device or may not work properly. If you have problems with your device, first try to reboot your device, and if that doesn’t work, you should enable the Android Debug Bridge in the Developer options or do some backup before using this application.

This application provides a means to change the display’s density and resolution. It is designed to work with any Android operating system display.

To change the resolution, you need to enable the Android Debug Bridge in the Developer options.