With over more than 1.2 billion monthly active users, WhatsApp is the 1st preferred choice for instant messaging, file sharing all over the world.
Previously, users could only share pictures, videos, audio messages, PDF and Word documents but in the latest release all major file formats are allowed for sharing. Now users will be able to share RAR, APK’s etc.
Stats Via: https://www.statista.com/statistics/260819/number-of-monthly-active-whatsapp-users/
There is a catch, a limit on how big a sent file can be. WhatsApp on Android will allow files under 100MB whereas iOS will allow upto 128MB. We still do not know why exactly there is a different file size limit for both operating systems.