After launching an investigation into the anti-theft practices of smartphone manufacturers like Apple, New York Attorney General Eric Schneiderman and San Francisco District Attorney George Gascón will today test how Apple’s Activation Lock feature holds up against determined thieves, reports CNET. First introduced at WWDC, Activation Lock is designed to prevent Find My iPhone from being deactivated, which keeps stolen iPhones from being wiped and reactivated. The feature is included in iOS 7, which is expected to be released to consumers this fall.