Apple insists iPhones aren't listening to what users are saying

(CBS 58) -- For iPhone users, Apple says your phones are not listening to or recording conversations around them. 

In a letter to federal lawmakers, Apple insisted that iPhones do not listen to what users are saying throughout the day. 

Apples says the phone only listens when it is triggered by the words "Hey Siri." iPhones also have a visual indicator that lets users know when Siri is listening to a request.