iPhone 15 Pro vs. iPhone 18 Pro Buyer's Guide: Should You Upgrade?

Three years after the debut of the iPhone 15 Pro and Pro Max models, Apple has unveiled its latest premium smartphones, the iPhone 18 Pro and Pro Max. These new iterations boast a host of improvements over their predecessors, including larger displays, a redesigned aluminum unibody design, enhanced camera capabilities, and extended battery life.

The iPhone 16 Pro introduced a bigger display with thinner borders, camera control features, a 48-megapixel Ultra Wide camera, and improved video and audio recording. Following suit, the iPhone 17 Pro featured an aluminum frame instead of titanium and glass, vapor chamber cooling, Ceramic Shield 2, and upgraded telephoto and front-facing cameras.

This year's refresh centers on the A20 Pro chip, a variable-aperture main camera, a smaller Dynamic Island, and a larger battery capacity. For iPhone 15 Pro owners, all three sets of upgrades accumulate. The iPhone 18 Pro starts at $1,199 for 256GB, $200 more than the iPhone 15 Pro's $999 launch price, while the iPhone 18 Pro Max begins at $1,299, $100 more than the iPhone 15 Pro Max's equivalent starting configuration. Here are the key distinctions between the iPhone 15 Pro and iPhone 18 Pro:

Design and Display:

* iPhone 15 Pro boasts a brushed titanium frame with a full glass back, while the iPhone 18 Pro features an aluminum unibody with a partial Ceramic Shield back, offering improved heat dissipation.

* The camera bump on the iPhone 18 Pro is full-width and made of aluminum, whereas the iPhone 15 Pro has a glass-rounded square camera bump.

* The iPhone 15 Pro features a 6.1-inch display, while the iPhone 15 Pro Max sports a 6.7-inch display. The iPhone 18 Pro comes with a 6.3-inch display and the Pro Max with a 6.9-inch display.

* The iPhone 15 Pro offers a 2,556-by-1,179-pixel resolution, while the iPhone 15 Pro Max displays a 2,796-by-1,290-pixel resolution. The iPhone 18 Pro boasts a 2,622-by-1,206-pixel resolution, and the Pro Max presents a 2,868-by-1,320-pixel resolution.

* The iPhone 18 Pro has thicker borders compared to its predecessor, with a reduction of 30% introduced on the iPhone 16 Pro.

* Display brightness has been reduced from 2,000 nits (peak) to 1,000 nits (minimum) for the iPhone 18 Pro, while the Pro Max remains at 3,000 nits (peak) for outdoor use.

* The iPhone 18 Pro and Pro Max incorporate an oleophobic coating, alongside Apple's designed anti-reflective coating to reduce glare.

Camera Control:

* The iPhone 18 Pro introduces the Camera Control feature, a capacitive button with a sapphire crystal cover, allowing users to manually adjust settings such as lens aperture, shutter speed, white balance, and histogram.

* The iPhone 18 Pro features a wider camera plateau compared to the iPhone 15 Pro.

Performance and Connectivity:

* The iPhone 18 Pro is powered by the A20 Pro chip, a first-generation 2nm processor built with TSMC's N2 process. In contrast, the iPhone 15 Pro relies on the A17 Pro chip, a TSMC N3B-based 3nm chip.

* The A20 Pro chip supports 12GB of LPDDR5X RAM, compared to the A17 Pro's 8GB LPDDR5 RAM in the iPhone 15 Pro.

* The iPhone 18 Pro features a faster memory bandwidth of 115GB/s, up from the 51.2GB/s found in the iPhone 15 Pro.

* The iPhone 18 Pro is equipped with a 7-core GPU, including hardware-accelerated ray tracing, while the iPhone 15 Pro utilizes a 6-core GPU.

* Both devices have a 16-core Neural Engine, with the iPhone 18 Pro boasting a dual 16-core Neural Engine for 32 total cores.

Battery and Charging:

* The iPhone 18 Pro features an increased battery capacity compared to the iPhone 15 Pro. The Pro Max retains a larger battery than the iPhone 15 Pro Max.

* Charging speeds have been improved, with faster wireless charging and wired charging options available on both models.

Camera System:

* The iPhone 18 Pro features a new quad-pixel sensor and computational imaging pipeline, building upon the advancements seen in the iPhone 16 Pro.

* The variable aperture system allows for a range of f/stops: ƒ/1.48, ƒ/1.8, ƒ/2.8, and ƒ/4.0, offering greater creative control to users.

* Night mode has been enhanced for faster performance and better low-light capability, providing more detail in backgroup group photos.

* The Pro controls in the Camera app empower users to adjust settings such as manual lens aperture, shutter speed, white balance, and histogram.