It's not hard for Apple to switch to USB-C on the iPhone, depending on whether they want to or not, but it's a trend that's already happening with the iPad.
According to a recent report from foreign media, apple may use USB-C port in the iPhone 14, but it is not clear whether apple will actually make such a change, but it is more of a game of interest, that is, Apple is willing to give up billions of accessory revenue.
Apple makes billions of dollars a year from its own independent interface and standards review, but to abandon the standard would be to burn a hole in its own pocket, and it would be hard to see apple's ambition under Cook's leadership in the short term.
According to previous sources, Apple is considering a USB-C port for its next iPhone, and more specifically for the Pro model. There are three main things about this adjustment,
1. Lightning port has been in use since 2012. It uses the transmission speed of USB 2.0 and requires faster transmission after supporting 4K video shooting.
2. Apple wants to avoid future legal problems caused by not including universal connectors like USB-C. Both the U.S. government and the European Union are pushing for usB-C ports in all devices and are preparing to fine any tech company that doesn't comply;
3. It would certainly help the environment if the iPhone switched to USB-C and all smartphones had only one type of charging port.