According to authoritative insider Ming-Chi Kuo, all iPhone 15 models will install a USB-C connector instead of Lightning. The older iPhone 15 Pro and 15 Ultra models will get fast USB-C 3.2 or Thunderbolt 3, while the base 15 and Plus will get USB 2.0.
The maximum transfer rate of USB 3.2 is 20 Gb/s, Thunderbolt 3 is 40 Gb/s, and USB 2.0 is 480 Mb/s. That is, the owners of the iPhone 15 and 15 Plus will not receive an increase in data transfer speed.
Slow USB-C installed in the 10th generation iPad. The connector is new, but the speed is the same as in devices with Lightning.
Perhaps Apple will install Thunderbolt 3 with a USB-C connector only in the 15 Ultra model to further emphasize the “premium” of the smartphone. According to rumors, the smartphone will receive 256 GB of memory in the basic version, two front cameras, and a 5x optical zoom.