To recover deleted WhatsApp messages without a backup, your options depend on your device type and the time since deletion. Here are the main methods:

For Android Devices

• Use Local Backups: WhatsApp automatically creates local backups daily, stored in the device's internal storage or SD card under the folder WhatsApp/Databases. You can try restoring these backups within 7 days of deletion by renaming the backup file (e.g., msgstore.db.crypt14) to msgstore.db.crypt14 and reinstalling WhatsApp to restore from this local backup

• Third-Party Recovery Software: Tools like MobileTrans, Tenorshare UltData, EaseUS MobiSaver, or Dr.Fone can scan your device's internal memory to recover deleted WhatsApp messages, photos, and videos even without a backup. These programs often require connecting your phone to a computer and enabling USB debugging

* Example with MobileTrans:
  1. Connect your Android device to a computer with MobileTrans installed.
  2. Use the "Deleted WhatsApp Data Restore" feature.
  3. Follow on-screen prompts to scan and recover deleted messages back to your device

For iPhone Devices

• Third-Party Recovery Tools: Since iPhones do not keep local backups accessible like Android, you typically need recovery software such as PhoneRescue for iOS or Tenorshare UltData to scan the device and recover deleted WhatsApp messages without backup. This requires connecting the iPhone to a computer and running the recovery software

• No Direct Local Backup: Without an iCloud or iTunes backup, direct recovery is not possible through WhatsApp alone. Using recovery software is the main option

Important Notes

• The success of recovery without backup is not guaranteed and depends on how much new data has overwritten the deleted messages.
• Acting quickly improves chances since WhatsApp local backups on Android only keep data for about 7 days.
• Always avoid reinstalling WhatsApp or using the phone extensively after deletion to prevent overwriting recoverable data.

In summary, while WhatsApp itself requires a backup to restore deleted messages, you can attempt recovery without backup by using local Android backups within 7 days or third-party recovery tools on both Android and iPhone devices