One such issue is the size of the display. And while display size sounds like a simple enough topic—it’s whatever size in inches, measured on the diagonal—it’s gotten complex in recent years thanks to the evolving nature of the smartphone.

Today, smartphone displays aren’t just “bigger” than they used to be—again, as measured in inches diagonally—they’re also taller, top to bottom, and they are different widths, side-to-side, leading in sum to different aspect ratios. Taller and wider displays let you see more content, or at least provide a bigger canvas for that content, but they can also lead to heavier handsets that are hard or impossible to hold and use with a single hand.