Make Requests
The power of Siri is yours for the asking.
Summon Siri. Press and hold the Home button, until Siri beeps.
Ask Siri anything, from "set the timer for 3 minutes" to "what movies are showing tonight?" Open apps, and turn features on or off, like Airplane Mode, Bluetooth, Do Not Disturb, and Accessibility. Siri understands natural speech, so you don't have to learn special commands or keywords.
For hints, ask Siri "what can you do," or tap 
.
Siri often displays helpful info on your screen. Tap the info to open a related app or get more details.
Use Raise to Speak. Raise iPhone to your ear and speak after the beep. (If the screen isn't on, first press the Lock or Home button.) Raise to Speak must be turned on in Settings > General > Siri.
Change Siri's voice gender. Go to Settings > General > Siri (may not be available in all areas).
Use Siri with your iPhone headset or another wired or Bluetooth headset. Connect the headset, then press and hold the center or call button.