The average timetable between pro iPhone upgrades is three years. Apple's iPhone 18 Pro has arrived, with iPhone 15 Pro owners taking a close look. Here's how the two compare.

Apple launched the iPhone 18 Pro at its fall event, the latest in the Pro line. Three years ago, the same thing happened for the iPhone 15 Pro. A lot can change in three years, so iPhone 15 Pro owners are now considering upgrading.

Specs: iPhone 18 Pro starts at $1,199, iPhone 15 Pro at $999. The new model has an A20 Pro chip, 6.3-inch display, 48MP triple cameras, and up to 36 hours video playback. The iPhone 15 Pro has an A17 Pro, 6.1-inch display, 48MP main, and up to 23 hours.

The iPhone 18 Pro uses an aluminum unibody, while the iPhone 15 Pro introduced titanium. The new model is slightly larger and heavier, adds Camera Control, and offers Wi-Fi 7 and Bluetooth 6.