Probably you also feel a problem that your whats app downloads media like as photos video automatic and waste your data. You can handle it.
For updated whats app the setting moved in a new menu. Follow the steps to fix this unsuspected auto download.
Step 1. Open your whats app and see 3 dots on the above right corner of screen.
Step 2. Go to Settings>> Data Usage>> ‘Media Auto Download’ section
Step 3. Tap each options like as ‘When using mobile data’, ‘when connected wifi’, ‘When roaming’ and deselect all. That’s it. Now you can download media file as you need.