You can adjust the size of text and icons, selecting sizes for the small external display and the large internal display.
Do any of the following:


To reset the display size and text to the original settings:
Turn on accessibility features, like magnification to zoom in and out or a screen reader to hear audio descriptions of what you touch on the screen.
To adjust other internal display options, touch & hold a blank space on your home screen, then touch Personalize.
To adjust other external display options, go to Settings > External display.