This error occurs mainly because we lack storage space on your smartphone. We have several possibilities but the bottom line is to free space and thus have the amount sufficient to install WhatsApp. The first thing we can do is:
-Go To Settings> Applications> All> Google Play Store and press "Clear cache" and "Clear data"
-Restart Your smartphone and try installing WhatsApp again from Google Play Store
If we do not we still managed to download and install WhatsApp on Android, we have to free up space in some way. Here are some tips:
-Delete Device cache in Settings> Storage and click "Cached data"
-Move To SD card applications that allow you
-Eliminates Applications you no longer use
WhatsApp Examines folders with a file manager (eg ES File Explorer) to see if you can delete files. The folder is in "WhatsApp / Media /".