The higher-end iPhone 15 Pro and iPhone 15 Pro Max are also equipped with a USB-C port, but those devices support USB 3 data transfer speeds of up to 10 Gbps over a cable. Unlike recent iPad Pro models, this means that the Pro models unfortunately do not support Thunderbolt, which theoretically supports speeds up to 40 Gbps.
iPhone 15 Pro models will require a supported cable, such as Apple's one-meter Thunderbolt 4 Pro cable, to achieve USB 3 data transfer speeds.
All four iPhone 15 models are available to pre-order this Friday and launch September 22.