Despite rumors of an increase in thickness, the iPhone 18 Pro Max has the same physical dimensions as the iPhone 17 Pro Max. It is 163.4mm x 78mm x 8.75mm, but it did get 16 grams heavier. Apple says the iPhone 18 Pro Max weighs 249 grams, while the iPhone 17 Pro Max weighed 233 grams, making it the heaviest non-folding iPhone to date. It is heavier than the iPhone 14 Pro Max, which was previously Apple's weightiest iPhone at 240 grams.

Despite rumors of an increase in thickness, the iPhone 18 Pro Max has the same physical dimensions as the iPhone 17 Pro Max. It is 163.4mm x 78mm x 8.75mm, but it did get 16 grams heavier. Apple says the iPhone 18 Pro Max weighs 249 grams, while the iPhone 17 Pro Max weighed 233 grams, making it the heaviest non-folding iPhone to date. It is heavier than the iPhone 14 Pro Max, which was previously Apple's weightiest iPhone at 240 grams.

Despite rumors of an increase in thickness, the iPhone 18 Pro Max has the same physical dimensions as the iPhone 17 Pro Max. It is 163.4mm x 78mm x 8.75mm, but it did get 16 grams heavier. Apple says the iPhone 18 Pro Max weighs 249 grams, while the iPhone 17 Pro Max weighed 233 grams, making it the heaviest non-folding iPhone to date. It is heavier than the iPhone 14 Pro Max, which was previously Apple's weightiest iPhone at 240 grams.