WhatsApp for Windows Phone
Please feel free to check the below tutorials if you want to transfer WhatsApp messages and chat history from your Windows phone.
With the latest version of WhatsApp, you are able to back up and restore WhatsApp messages from Windows phone. Enjoy this features!
Regularly export WhatsApp chat history from Windows phone. You will never lose your WhatsApp chat history when you lose or change your Windows phone.
These are the summary steps on how to move WhatsApp chat history from one Windows phone to another, such as Windows 10/8.1/8/7 phone, and so on.