1. Install the latest version of itunes on your computer.
2. Connect the iPhone to the computer with the original USB cable, and then open the iTunes software on the computer.
3. After iTunes recognizes the iPhone, click the button at the top right of iTunes software to tease the iPhone (don't click the inverted triangle icon, the iPhone function will pop up).
4. Set the content to be synchronized: drag ringtones, music, books, applications, etc. Enter iTunes.
4. Then, in the summary of iPhone management interface on itunes, click the teasing button at the bottom.
5.itunes software will prompt whether to synchronize the voice memo in iPhone to the database on iTunes. Please click the tease button.
6. Finally, just wait for the synchronization to complete.