Siri comes to life with the press of a button.
Start Siri: Press the Home button until Siri appears.
You’ll hear two quick beeps and see “What can I help you with?” on the screen.
Siri waits for you to stop talking, but you can also tap the microphone icon to tell Siri you’re done. This is useful when there’s a lot of background noise. It can also speed up your conversation with Siri, since Siri won’t have to wait for your pause.
When you fnish speaking, Siri displays what it heard and provides a response. Siri often includes additional, related info that might be useful. If the info is related to an app—for example, a text message you’ve composed, or a location you asked for—just tap the display to open the app for details and further action.
You can start talking to Siri just by bringing iPhone to your ear, like making a phone call. If the screen isn’t on—frst press the On/Of or Home button. You’ll hear two quick beeps to indicate Siri is listening. Then start talking
If Siri doesn’t respond when you bring iPhone to your ear, start with the screen facing you, so your hand rotates on the way up.
Stop a phone call you started with Siri : Before Phone opens, press the Home button . If Phone is already open, tap End.
Suitable headset for iphone 4s :