How to retrieve deleted messages strand from 1 person?

The only way to retrieve deleted messages is through a backup that you may have created on your computer or iCloud. You will need to restore your iPhone from the backup and it will restore your messages that are backed up. Note that should you choose to do that then the messages will only be as current as the day and time the backup was made. Check the backup date and time on iCloud and the backup date and time on your computer and choose the appropriate one to restore from.

Axel F.

Delete a message or conversation

When you delete a message or conversation, you can't get it back. So make sure that you save important information from your messages.