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The latest beta version of WhatsApp for Android is 2.12.413 and can be downloaded from the official website. Unfortunately, the developers haven’t provided a change log for the APK, which has 26.1 MB in size and it’s bigger than the 2.12.411 version, which weighs 25.98 MB. So, most likely, the developers have brought more bug fixes and other improvements, because previously, they’ve added changes to the user interface, translations and other tweaks.

No new features have been added in the past weeks, besides the option to share documents. It’s still unknown what files have been modified in WhatsApp 2.12.413, but its previous version had 367 modified files, eight new files and four icons have been added. The three new files are Attachment_picker_1.xml, Tos_update_details.xml and tos_updated.xml and the last two ones are related to the terms of use of the application.

Just like any application that is downloaded from third party sources – not from the Google Play store, WhatsApp’s beta versions can be installed on Android devices only if the Unknown sources option is enabled. So, in order to enable it, you’ll need to head to Menu> Settings> Security and when you see the box in front of Unknown sources, check it.

Beta versions are not exempt from glitches and other problems and errors may appear even during the installation. We recommend you to take a backup of your old chats in case something unexpected happens, in order to make sure you won’t lose them. If you don’t want to deal with these issues, it’s better to install the stable version from the Google Play store.

Unofficially, WhatsApp has surpassed 1 billion active users and it is rumored that in the upcoming months, we’ll see the Video calling feature added to the Android version. Some leaked images with the feature in action have surfaced a few months ago, but WhatsApp has refused to comment on the subject.