PhilSynowiec
iPhoneForums.net News Team
UntetheredHeySiri is a Jailbreak Tweak that takes away the limitations on the Hey Siri feature. After installing the Tweak, the user can choose in Settings to have Hey Siri activate only when plugged in, or activate anywhere, even when not on a charger.
I have a bit of a love hate relationship with this Tweak, sometime I'll have my iPhone 6 Plus plugged in at home, I'll be watching a movie and Siri will activate because it thought it heard "Hey Siri". Either way, UntetheredHeySiri is a free Tweak and now available in the Cydia Store.