I remember back in the day when people would “Jailbreak” iPhones, but never really picked up on what they were doing other than that it let them do stuff that those of us with “non-jailbroken” iPhones couldn’t do.
Are they just booting another OS, e.g. android? Also: why haven’t I heard of it in a while? Is it not possible on newer iPhones?
On the first iPhone once jail broken, the camera would also record video. Apple came out with video on a future release. The hardware was there all along, the software blocked it. Who knows what is locked down on current phones.