https://www.vice.com/en_us/article/wxqwk9/apple-will-make-you-buy-a-dollar20-charging-brick-to-charge-dollar1000-iphone-12-pro

Apple has found yet another way to force you to buy an expensive dongle/adapter for its expensive gadgets in order to make said gadgets work, and has yet again avoided adopting an international standard connector that would have made everything a lot simpler. 

As the world has started to move to USB-C, which is better than older USB-A ports (cables can face either direction, fast-charging is supported), many people have been hoping that Apple would switch to USB-C for charging on the iPhone. It is increasingly the standard that most devices use, so you'd be more likely to find a cable to charge your phone no matter where you go. Instead, Apple has stuck with its proprietary (but now widely available) Lightning Port, but has included a USB-C to Lightning charging cable with the iPhone 12. What this means is that the charging cord that comes with your new phone will not plug into older computers or the vast majority of power bricks ever created.