HOW TO DOWNLOAD DATAFROM, WHATSAPP DATA 
For retrieving your WhatsApp data, there are two prerequisites — you need to own an Android phone and enroll in the beta channel. The messaging service has yet to make the feature available to all the users.

• If you do own an Android phone, open up this link for becoming a part of the Beta program or you can simply sideload the latest APK file.
• Now, all you need to do is for generating the report is launch the WhatsApp app, open settings from the three-dot menu present on the top right, and tap the first option which is “Account”.
• There, you’ll find “Request Account Info”. Click the “Request Info” button. Your report should be ready in a day, although I received mine in a couple of hours. Since your messages are not obviously not included this, the response time doesn’t depend on how active you’re on WhatsApp.

The report will include several details such as whether you’ve opted in or out for sharing the data with Facebook, which platform you’re on, your phone’s model number, since when you’ve been online, and more. The feature should begin rolling out to all the users in a few weeks. However, as of now, we don’t know when is this coming for iPhones.