Apple's iPhone runs on an operating system called "iOS." Conversation recording can be performed using a few different applications, depending on the type of conversation you're recording. If you just want to record a conversation you're having that isn't a phone call, you can use a native application. If you want to record actual phone calls, you will have to use third-party applications available in the iTunes App Store.
Tap the blue "Voice Memos" application icon from your iPhone's menu. Tap the circular red "Record" button on the left side of the application. Your iPhone will now be recording all conversations it picks up with its microphone. When you're finished recording, tap the "Stop" button on the right side of the application window one time.
Use "Recorder" to record phone conversations made over your iPhone. As of January 2011, "Recorder" is available for $0.99 in the iTunes App Store. After the initial purchase of the app, you must pay an additional fee to record phone calls -- either $1.99 for one hour of recording or $12.99 for eight hours of recording. Tap the "Record" button in the "Recorder" application to begin recording, and tap the "Call" button to place your call.
Download and install "Google Voice" from the iTunes App Store. Google Voice is a free application that supports, among other features, recording incoming and outgoing calls made using the Google Voice application on an iPhone. Calls are stored in an audio file on your iPhone's internal storage drive. The Google Voice application requires that you sign up for a free Google Voice account before you can use it.
- Depending on what state you live in, it may be illegal to record a phone conversation without the consent of the person you're talking to.