Secrets About Your iPhone Headphones That Owners Do not Know

3. Ignore incoming calls

When you have an incoming call, press and hold the center button for a few seconds, then release it. Two beeps will be heard that indicate the call has been disconnected.

2. Answer and end calls

Tapping the center button once, attends an incoming call and tapping it once during a call hangs it up.

1. Activate Siri

If you have an iPhone 4S or later model, you can tap and hold the center button to activate Siri.