Unlocking an iPhone with no service permits you to apply it to any community, whatever the one it was initially locked to. This may be helpful if you wish to swap carriers, use your iPhone internationally, or promote it to somebody who makes use of a unique service.
There are just a few alternative ways to unlock an iPhone with no service. A technique is to make use of a third-party unlocking service. These companies sometimes cost a price, however they will normally unlock your iPhone rapidly and simply.