In iOS 7, Siri can change a number of settings on the iPhone, including toggling Bluetooth on and off or changing the screen brightness. As one MacRumors reader noticed, Siri can also activate Airplane Mode, even if a passcode lock is set, allowing a thief to effectively disable Find My iPhone on a stolen device. However, Apple has added some extensive security features to deter phone theft in iOS 7, most notably the Activation Lock feature that prevents a lost or stolen iPhone from being activated without the Apple ID password used to erase the phone. Activati
