The iPhone 11 Pro Max and the iPhone 12 Pro Max are similar in size but the 12 Pro Max is just slightly larger. (However, it is thinner.) The display on the iPhone 11 Pro Max is 6.5 inches while the display on the iPhone 12 Pro Max is 6.68 inches.
- The iPhone 11 Pro Max Measures: 6.22 x 3.06 x .32 inches (HxWxD)
- The iPhone 12 Pro Max Measures: 6.33 x 3.07 x 0.29 inches (HxWxD)