Gruber addressed this in a footnote: "You might wonder, Hey, don’t you feel like a jerk walking around the city talking to your phone? But here’s the thing: Si

Gruber addressed this in a footnote: "You might wonder, Hey, don’t you feel like a jerk walking around the city talking to your phone? But here’s the thing: Siri, by default, kicks in when you hold the iPhone up to your ear, so you can talk to it and it looks like you’re on a phone call."