There are a few different methods you can try to recover deleted SMS (short message service) messages on an Android device without a backup:
Use a data recovery tool: There are many data recovery tools available that can scan your Android device and attempt to recover deleted files, including SMS messages. Some options include FonePaw Android Data Recovery, Dr.Fone for Android, and Wondershare Dr.Fone for Android.
Restore from a cloud backup: If you regularly back up your Android device to the cloud (using Google Drive, for example), you may be able to restore deleted SMS messages from the cloud backup.
Use an SMS recovery app: There are also specific SMS recovery apps available on the Google Play Store that claim to be able to recover deleted messages. It's worth noting that the effectiveness of these apps may vary.
It's important to keep in mind that the chances of successfully recovering deleted SMS messages may depend on a variety of factors, including how long it has been since the messages were deleted and how much new data has been written to the device since then.
