To permanently delete Facebook messages from both sides (yours and the recipient's), you must use the "Unsend for Everyone" feature on messages you sent, which removes them from both chats, while "disappearing messages" in encrypted chats offer automatic deletion after a set time, but truly permanent removal requires the other person to also delete them or using secure methods like end-to-end encryption with timed deletion, as standard deletions are only on your side unless "Unsend" is used.
When you delete a chat on Facebook Messenger, it will remove that chat and its history from your account and all devices logged in to your account. However, please note that other participant(s) will continue to have a record of the chat and its messages.
Method 1: Use Apple's official undo send feature
This is the primary and most reliable method for deleting messages from both sides. Apple introduced this feature in iOS 16, and when it works, it completely removes the message from both devices.
Delete a community chat on Facebook
Deleting messages, chats or photos permanently removes them, and you won't be able to see them anymore. If you want to hide a chat from your Chats list but not delete it, you can archive the chat instead. When deleting a message you sent, you have the option to Delete for you or Delete for everyone.
You can permanently unsend a message that you've sent or just hide a message from your view. If you select Unsend for you, other people in the chat will still see the messages in their chat screen. If you select Unsend for everyone, people included in the chat won't be able to see the unsent message.
When You Block Someone on Messenger, Does It Delete the Conversation. Nope. Blocking someone will not delete the conversation thread from any side. In other words, the old conversations will remain in Messenger, and you will be able to read them until you manually delete the chat thread.
With proprietary technology, digital forensics professionals can retrieve the following: Message Content and Metadata: This includes the content of deleted and archived message threads.
You can't delete all your Facebook messages at once, but you can delete them one chat at a time. To delete a chat on Facebook, go to the chat settings and click Delete chat. To delete a chat on Messenger, swipe to the left, tap More and Delete.
Clear all chats at once
Using the Messenger App
If you delete messages on Instagram, Snapchat, or Messenger, police can even recover those messages. Those messages that you thought were gone forever and for more secure applications that use end-to-end encryption, police can use programs such as Celebrate to access deleted documents, videos, messages from your phone.
The reality is far less final. Think of your phone like a filing cabinet. Deleting a message doesn't instantly shred the paper, but it just removes the folder tab that lets you find it easily. The message itself still lingers in the “drawer” of your device's storage until new data overwrites it.
Deleted messages on Android are not immediately erased but hidden and marked as using no storage space. They remain hidden until overwritten by new data. A lot of third-party data recovery software can access hidden data, such as deleted text messages waiting to be overwritten.
Deleting your Facebook account will remove your visible presence from the social media network but it doesn't remove everything you ever touched on the platform. Deleting Facebook also severs ties to Facebook Messenger but your messages to friends will still be accessible to them.
Messages that have been backed up to your Cloud account can be restored. If your messages are not in the Cloud backup, you may need to check other recovery methods available on your device or through your messaging app.
Keep in mind that once the message sends, the other person can see it. When you delete a message in Messenger, you only delete it for yourself. The other party can still see it. But you can overcome this by unsending a message.
Deleting the WhatsApp messages means deleting them entirely from the WhatsApp logbook. On the other hand, Clear WhatsApp chats mean you are clearing them from your WhatsApp board only. You can restore the backup messages when you log in to the new device, provided that you have only cleared them and not deleted them.
Unsending a message is a feature that lets you remove a message from both your and the recipient's chat. In contrast, removing a message with the Delete feature only removes the message from your chat and not the recipient's chat. The differences between unsending and deleting a message are as follows.