For the first time, though, a leaker is claiming that Apple is testing what would be its largest iPhone screen. That's close enough for Apple's marketing, but it seems less significant since the current iPhone 17 Pro Max screen is 6.86 inches. Still, screen sizes are measured diagonally so such a difference could amount to the iPhone 20 Pro Max screen being up to 2% larger than the current model. Then the iPhone 16 Pro Max went up from 6.7 inches to 6.9 inches, while the iPhone 16 Pro screen was 6.3 inches where its predecessor had a 6.1 inch display. This leaker has a reasonable track record with Apple leaks, and has recently reported rumors about the screen size of the iPhone Fold 2.