Upgrading to the iPhone 18 Pro? Almost all older cases will survive the jump because Apple kept its exterior dimensions identical to the iPhone 17 Pro.
iPhone 18 Pro
iPhone 18 ProApple lists both generations of the smaller Pro at 5.91 inches tall, 2.83 inches wide, and 0.34 inch deep. In metric measurements, each phone is 150 mm by 71.9 mm by 8.75 mm.
The same applies to the larger models. Both iPhone 17 Pro Max and iPhone 18 Pro Max measure 6.43 inches tall, 3.07 inches wide, and 0.34 inch deep, or 163.4 mm by 78 mm by 8.75 mm.
- iPhone 17 Pro and iPhone 18 Pro measure 150 mm by 71.9 mm by 8.75 mm
- iPhone 17 Pro Max and iPhone 18 Pro Max measure 163.4 mm by 78 mm by 8.75 mm