One of my most used features of Siri is opening apps, however it has just suddenly stopped working. It doesn't matter whether the app is a first or third party app. I can open them from the lock screen, but not when the phone is unlocked. Any idea? I've turned Siri on and off and hard reset my iPhone, ideally I don't want to erase my iPhone completely as I have already done that once for another issue. The iPhone is set up as a new iPhone, I never restore from a backup.