You used to be able to UNLOCK an iPhone with Cydia for free once
it was JAILBROKEN...WHAT HAPPENED?  Back in the day I could
jailbreak an iPhone than use an app in the Cydia store to unlock
it. What changed? Now a days you gotta pay for it or buy a sim.
I know there is a difference between factory unlocks and
untethered unlocks, but do both still exist.  I can't find
instructions anywhere