What's the size difference between iPhone 11 and iPhone 12?

iPhone 11 and iPhone 12 have the same 6.1-inch screen size, but if you look carefully, iPhone 12 is a little smaller and weighs almost 1 ounce less than iPhone 11

iPhone 11: 150.9 x 75.7 x 8.3 mm (5.94 x 2.98 x 0.33 in)

iPhone 12: 146.7 x 71.5 x 7.4mm (5.78 x 2.82 x 0.29 in)