Unlocking the iPhone quickly and easily

So what’s the easiest way to unlock an iPhone after it has been released for use on another carrier?

Is it, as most will tell you – Apple included, to completely restore the phone through iTunes?

No. Simply insert a SIM card from another carrier and wait for a minute or two (use common sense with any prompts that may appear).
Note: carriers tell me that the unlock can take from 1 hour to two days, so if it doesn’t work it’s worth waiting a couple of hours and trying again.

As always, ensure you have backed up your iPhone first.