The "Hey Siri" feature allows you to turn on Siri by saying, "Hey Siri," but some users have reported that this can enable Siri without input. This can cause Siri to start playing music or making calls without you asking it to. Disabling the "Hey Siri" feature can help prevent this.
 This will open the general settings for your device.
 This will display the Siri settings menu.
 This will disable the "Hey Siri" feature and prevent Siri from starting without your pressing the Home button.
Disable "Hey Siri" if you like using Siri but it's activating on its own.
Open the Settings app and tap "General.",
Select "Siri.",
Toggle the Allow "Hey Siri" option OFF.
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