A normal icon / avatar today is often recommended to be 512x512 pixels = 262 144 pixels Back in those days a screen was often 640x480 = 307 200 pixels An iPho

A normal icon / avatar today is often recommended to be 512x512 pixels = 262 144 pixels Back in those days a screen was often 640x480 = 307 200 pixels An iPhone 12 Mini has a 1080×2340 screen = 2 527 200 pixels = over 8 times the size of those old screens Today's OS:es work with much much larger datasets overall, not just in graphics but elsewhere as well, and are optimized for that