WhatsApp has been experimenting with the available features continuously. Just recently yhe users came to know that they had be able to hide the media shared in self-destructing chats from the photo gallery of their phone. No so long ago few users received the ability to share the files as large as 2GB. Now there is an upcoming feature introduced that might dovetail really well with sharing the larger files.
WhatsApp is introducing a feature that allows the users to monitor when a document has been transferred fully. The latest beta versions of the app for iOS, Android and Web show the time of arrival when sharing the files so you will know when your document is available to open. The desktop version of ETA monitor was there last month and Android and iOS beta testers just received it.