How to recover deleted messages in Facebook messenger: This is the simplest method of recovering all your deleted Facebook messages on iPhone 7/SE/6s/6s Plus/6 Plus/6/5s/5c/5, etc. Keep in mind that this way is not available in the Facebook Official iOS 8 app, so you must log onto Facebook via PC if you really want to find deleted messages on Facebook.
Step 1: Login your Facebook via PC web-browser like Safari, Google Chrome, etc. and navigate to Settings >> General >> Download a copy.
Step 2: Click on “Download a copy” button and click “Start My Archive” afterwards. Then you’ll receive an email to verify your Facebook identity. After that head for mail inbox and click on the given link to start downloading Archive file.
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