The “Hey Siri” feature in iOS lets users access and query Siri with just their voice, without the need to touch their iPhones or iPads. While “Hey Siri” can be a helpful way to interact with Apple’s personal digital assistant service, some users find that the feature is prone to misfires and inadvertent activations. If you prefer to manually trigger Siri via the Home button, here’s how you can turn off “Hey Siri.”