Apple launched the iPhone 18 Pro and iPhone 18 Pro Max on September 18, featuring the first 2nm smartphone chip, a variable-aperture main camera, and a 25% smaller Dynamic Island. Reviewers report incremental external updates paired with substantial internal engineering refinements across both models.
A20 Pro Performance and Thermal Upgrades in the iPhone 18 Pro
Apple has equipped its newest Pro lineup with the A20 Pro chip, the first 2nm chip in a smartphone. According to manufacturer specifications cited across early evaluations, the processor delivers up to 20 percent faster CPU performance and up to 40 percent faster graphics performance compared to the previous A19 Pro chip.
Independent bench-testing provides concrete figures for these gains. Raymond Wong of Gizmodo ran Geekbench 7’s CPU benchmark on the new hardware running iOS 27, recording a single-core score of 4,027 and a multi-core score of 11,540. By comparison, the predecessor iPhone 17 Pro achieved 3,258 on single-core and 9,167 on multi-core testing, translating to a 24 percent single-core boost and a 26 percent multi-core increase.
To manage heat under heavy loads, Apple introduced a revamped vapor chamber cooling system. The internal plate is three times larger than the one found in the iPhone 17 Pro series, a modification designed to sustain peak processor speeds over extended periods. Reviewers noted that the hardware remained stable even when shooting 4K resolution video at 60 frames per second during high ambient temperatures in Cupertino.
Variable Aperture Photography and Manual Camera Controls
The headline hardware change for mobile photography is a 48-megapixel Fusion camera equipped with variable aperture. The system permits adjustments to the amount of light reaching the sensor, giving operators direct control over depth of field for low-light shots and group portraits.
Available aperture options span ƒ/1.48, ƒ/1.8, ƒ/2.8, and ƒ/4.0
, according to technical specifications detailed by review outlets.
In order from sharpest to softest, it goes: f/2.8, f/1.8, f/4, and f/1.48.
Jaron Schneider, PetaPixel
Alongside the physical aperture mechanism, the Camera app on the iPhone 18 Pro introduces exclusive Pro controls for manually adjusting shutter speed, white balance, and aperture alongside a built-in histogram. While reviewers welcomed these manual adjustments, some critics noted ergonomic friction. Patrick Holland of CNET observed that accessing the shutter and aperture controls requires tapping to expand the bottom drawer during one-handed operation, noting a desire for customizable icon placement or assignment to the physical side-mounted Camera Control button.
Refined Design, Color Options, and a Smaller Dynamic Island
Visually, the iPhone 18 Pro models retain the general footprint of their predecessors while addressing public feedback regarding last year’s aesthetic. Reviewers widely noted that the polarizing two-tone camera plateau of the iPhone 17 Pro has been replaced with a color-matched glass and aluminum back design available in four finishes: black, silver, glacier, and burgundy. The burgundy option has been highlighted by tech curators as a deep red-and-purple shift, while the black variant represents the darkest Pro finish Apple has produced.
At the top of the display, the Dynamic Island is approximately 25 percent smaller than previous iterations. Apple achieved this reduction by relocating the Face ID infrared camera beneath the screen and halving the pixel density in that localized area to permit infrared light transmission. The space saving translates directly to interface utility: the display now comfortably supports up to three simultaneous Live Activities, with secondary widgets on the right side capable of displaying expanded data streams such as flight information.
Battery Endurance and Device Weight Comparisons
Internal expansions—including larger cooling plates and battery capacities—have added weight to the device chassis without altering overall thickness.
| Pro Model | Thickness | Weight |
|---|---|---|
| iPhone 17 Pro | 8.75 mm (0.34 in) | 206 g (7.27 oz) |
| iPhone 18 Pro | 8.75 mm (0.34 in) | 211 g (7.44 oz) |
| iPhone 17 Pro Max | 8.75 mm (0.34 in) | 233 g (8.22 oz) |
| iPhone 18 Pro Max | 8.75 mm (0.34 in) | 249 g (8.78 oz) |
Reviewers observed that the heavier frame of the iPhone 18 Pro Max approaches the upper limit of comfortable daily handling. In benchmark testing conducted by Tom’s Guide, the iPhone 18 Pro Max recorded 18 hours and 27 minutes of continuous use, outperforming the preceding iPhone 17 Pro Max result of 17 hours and 54 minutes. Fast-charging capabilities also improved, with the hardware capable of recovering up to 50 percent charge in 15 minutes using a 60W adapter.
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