Certainly, if you have created a backup with iCloud or iTunes, it also assists you to restore them easily.
How to Restore WhatsApp Messages without Backup.
If you just switched your phone, you will possibly think about restoring WhatsApp messages from your backup online.
Choose whether you want to back up your messages daily, weekly, or monthly.
If you are well familiar with how to navigate your device then follow these steps on how to recover your deleted WhatsApp conversations.
Guide on how to recover WhatsApp data with backup on Android device: 1.