Have hackers killed the iOS kill switch? So claims a pair of hackers, who say theyve found a way to hijack the connection between a lost and locked iPhone and Apples servers, thus unlocking the phone and undermining Apples much-vaunted Activation Lock anti-theft protection. Activation Lock is a feature introduced in iOS 7 that lets users remotely put their phone into Lost Mode or remotely wipe the phone of its sensitive data.