Running Linux on an iPhone is certainly unusual.
This loads the Linux variant Ubuntu with a kernel for the A10 processor in iPhone 7 developed by the company Corellium (which has been sued by Apple).
Before the tool has time to start trying to jailbreak iOS, he forcibly shuts it down and instead gets Pongo OS to connect to a network disk.
This hopeful principle is demonstrated by a video shared by Daniel Rodriguez, in which an iPhone 7 with dead storage is brought to life and set up to run Ubuntu 20.04 - including the full graphical interface.
To be able to run a kernel other than iOS, he uses the jailbreaking tool Checkra1n, which bypasses the iOS device's Boot ROM protection and launches a bootloader called Pongo OS.