This tutorial will show you how to transfer WhatsApp history to a new iPhone. You must Recover backed up chat history from iCloud. First verify that there is an iCloud backup for your chat history.
Step # 1 – Open Whatsapp.

Step # 2 – Go to WhatsApp Settings.

Step # 3 – Chat Settings.

Step # 4 – Chat Backup.

Step # 5 – If you can see when the last backup was performed…

Step # 6 – Simply delete and reinstall the app from the App Store.

Step # 7 – After verifying your phone number, follow the on-screen prompts to restore your chat history on your new iPhone

The same iCloud backup requirements apply for iCloud restore.
