How to get back deleted data from iPhone device, if you can’t recover them by usual ways (from iTunes or iCloud backup).
Tell me if you how to do it, because I just accidentally deleted some important iMessages on my iPhone.
Since I notice that you are not able to restore deleted iMessages I “usual ways” such as from iTunes backup or iCloud backup.
In such case, the only option left with you is to use third-party iPhone Data Recovery tool to recover lost or deleted iMessages from iPhone.
Please don't worry, you can use iOSRescuer to help us recover deleted iMessages from iPhone device without backup. First link your iPhone to pc via usb cable, start the iOSRescuer. It will scan out all data, including the deleted iMessages. Then you can recover them back.