US prosecutors encourage users to upgrade to iOS 7 for Activation Lock security feature
“In the months ahead,” the statement reads, “it is our hope that Activation Lock will prove to be an effective deterrent to theft, and that the widespread use of this new system will end the victimization of iPhone users, as thieves learn that the devices have no value on the secondary market. We are particularly pleased that – because Activation Lock is a feature associated with Apple’s new operating system as opposed to a new device – it will be available to consumers with older phone models who download the free upgrade.”