How to edit expiration settings for audio messages in iOS 8

[iMore.com]

Audio messages, introduced in iOS 8, allow you to send short voice clips via iMessage. They're incredibly easy to use and receive which should make them a popular option when folks are unable to text. However, they can take up far more storage space than regular text-based messages. That's why you're able to edit automatic expiration settings for audio messages to suit your needs.

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