These headphones with USB-C connection do not fit directly to the iPhone 12 as it has a Lightning connection. To use them with an iPhone 12, you need a special adapter from USB-C to Lightning, which is not officially offered by Apple and often does not support all functions such as making calls.

Instead, Apple offers EarPods with a Lightning connector, which are directly compatible and support all functions. An adapter is therefore required, but compatibility and functionality are not guaranteed, which is why EarPods with a Lightning connector are the better choice for the iPhone 12.