iPhone 18 Pro Max vs iPhone 17 Pro Max: What's New and Is It Worth Upgrading?

Specifications for the iPhone 18 Pro Max below are based on pre-launch reporting and subject to revision at Apple's September 2026 announcement. See Apple's iPhone 17 Pro Max page for the confirmed current-model specs.

Three hardware changes are expected to separate the iPhone 18 Pro Max from the iPhone 17 Pro Max. Apple will confirm the full list at its September event, the below reflects the weight of pre-launch reports as of July 2026.

• A20 Pro chip (2nm process): Apple's first 2nm consumer chip, fabricated by TSMC. Expect meaningful gains in on-device AI processing and sustained GPU performance compared to the A19 Pro's 3nm process.
• Under-display Face ID: If this ships, the Dynamic Island disappears entirely, the face-unlock sensor array moves behind the OLED panel. Functionally it should perform identically to the current system; the change gives back meaningful screen real estate and produces a fully uninterrupted display front.
• Variable aperture main camera: The primary lens is expected to gain mechanically adjustable aperture, letting you dial between a wider opening for low-light shots and a narrower setting for sharper landscapes. The iPhone 17 Pro Max camera is excellent; this is a creative expansion, not a fix for a broken system.

Everything else, the 6.9-inch screen size, 5x periscope zoom, USB 4, Action Button, and Camera Control, carries over from the 17 Pro Max unchanged.

Under-display Face ID would be the most visible design change to an iPhone since Face ID replaced Touch ID. If Apple ships it on the iPhone 18 Pro Max, the front becomes a full, uninterrupted display for the first time on a Pro Max model.

Functionally, there is no reason to expect a speed or accuracy regression. Apple would not ship a biometric downgrade. The sensor array moves behind the OLED panel rather than sitting in a cutout in front of it. For most users this is a cosmetic upgrade with a meaningful aesthetic payoff rather than a practical one. Apps that use the Dynamic Island for live activity indicators will adapt; Apple's APIs already account for both layouts.

This feature is reported by multiple pre-launch sources but not yet confirmed by Apple. September's announcement is the only authoritative source for what ships.

Variable aperture on the main camera is the upgrade most likely to change how you actually use the phone day-to-day, assuming it ships as rumored.

The iPhone 17 Pro Max shoots its main camera at a fixed f/1.78. The 18 Pro Max is reported to offer a range from roughly f/1.6 to f/2.8. In practice:

• Wide open (f/1.6): More light reaches the sensor in dim conditions; shallower background separation on close subjects.
• Stopped down (f/2.4 to 2.8): Sharper corners on wide landscape and architectural shots; reduced diffraction on bright subjects.

The iPhone 17 Pro Max's computational photography already compensates for many limitations of a fixed aperture. Variable aperture is not a remedy for a weak camera, the 17 Pro Max camera is class-leading. It is a tool for users who want finer creative control over depth and exposure rather than leaving those decisions to the software.

Upgrading makes clear sense if:

• You photograph frequently in challenging light and want the added flexibility of variable aperture.
• You find the Dynamic Island an aesthetic annoyance and have been waiting for an uninterrupted display front.
• You rely on Apple Intelligence features heavily and want the headroom that the A20 Pro's 2nm process provides as on-device AI tasks grow.

Staying on the 17 Pro Max makes sense if:

• You upgraded to the 17 Pro Max at launch, most improvements are incremental for a one-year-old top-tier phone.
• Your camera use is casual. The 17 Pro Max camera remains best-in-class regardless of the 18 Pro Max's arrival.
• You are cost-conscious. Selling the 17 Pro Max and buying the 18 Pro Max will cost several hundred dollars even with a strong trade-in payout.

Flagship phones commonly lose 30 to 50% of their resale value within the first 12 months after a new model launches (source: BuyBackBear price-history tracking and industry resale data). If you decide not to upgrade, your 17 Pro Max holds strong value right now, but that window narrows after the September announcement.

Whether you plan to upgrade or not, your iPhone 17 Pro Max is near peak resale value today, before Apple announces the iPhone 18 Pro Max. Once the announcement happens, trade-in values on the 17 Pro Max drop quickly as the supply of used units entering the market surges.

If you are upgrading: sell the 17 Pro Max through a mail-in buyback service before September to capture maximum cash. Apply the proceeds directly toward the 18 Pro Max purchase. Waiting until after the launch event typically costs $100 to $200 in trade-in value on a Pro Max. Apple Trade In offers store credit as an alternative but consistently pays less than the leading buyback services in cash terms.

If you are keeping the 17 Pro Max: read about how to prepare an iPhone for resale so you are ready to move quickly if you change your mind later. Also review what carrier trade-ins pay versus selling outright, the gap on a Pro Max is significant.