iPhone 18 Pro Max vs iPhone 17 Pro Max

A specification comparison, not a hands-on review. Display diagonals are measured as rectangles; actual viewable areas are smaller. Regional variants may differ: check the local official specifications.

FeatureiPhone 18 Pro MaxiPhone 17 Pro Max
Display (inches; inner / outer for foldables)6.96.9
Weight249 g231 g
ChipA20 ProA19 Pro
Storage256GB / 512GB / 1TB / 2TB256GB / 512GB / 1TB / 2TB

How to choose

Both have 6.9-inch displays and the same storage tiers. The 18 Pro Max uses A20 Pro and the listed variant weighs 18g more than 17 Pro Max. If you own a 17 Pro Max, identify an actual limitation before budgeting for an upgrade. A chip name alone does not quantify performance gains. Current used or retailer prices should not be compared as if they were launch prices. Monitoring covers the 18 series and Duo only.

Official sources

2026-09-14

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