[header] How to send an audio message from an iphone [title] Open your iphone's messages. [step] It's the white speech bubble icon on a green background on the home screen. [title] Tap a contact's name. 
[step] Doing so will open your conversation with that person. [substeps] If you can't find the conversation you need, swipe down on this screen and then type your contact's name into the search bar at the top of the screen.