Apple iPhone 4G - Manual (Page 160)

Voice Memos
21
Recording Voice Memos
Voice Memos lets you use iPhone as a portable recording device using the built-in
microphone, iPhone or Bluetooth headset mic, or supported external microphone.
Note: External microphones must be designed to work with the iPhone headset jack
or Dock Connector. These include Apple-branded earbuds and authorized third-party
accessories marked with the Apple “Made for iPhone” or “Works with iPhone” logo.
You can adjust the recording level by moving the microphone closer to or further
away from what you’re recording. For better recording quality, the loudest level on the
level meter should be between –3dB and 0 dB.
Record button
Audio level meter
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