The Pixel 7 Pro body is 162.9 x 76.6 mm, giving it an area of 12,478 mm^2. The Pixel Fold body is 139.7 x 158.7 mm, giving it an area of 22,170 mm^2. So the are

The Pixel 7 Pro body is 162.9 x 76.6 mm, giving it an area of 12,478 mm^2. The Pixel Fold body is 139.7 x 158.7 mm, giving it an area of 22,170 mm^2. So the area of the folding phone is almost twice the size! This was surprising to me since, as you say, the diagonal lengths are similar. Of course, it's due to the Fold having a more square shape. Caveat: this is measuring the size of the phone itself, not the screens, since that was easier to find.