By Jorge Calvillo (staff@latinospost.com) | First Posted: May 14, 2014 09:46 PM EDT

As announced earlier this year, the popular instant messaging app WhatsApp has started to allow its users to make voice calls in its new beta version for Android.

Last February, during the Mobile World Congress, Jan Koeum, CEO of WhatsApp announced that the service would include voice calls in the second half of this year, reported Reuters.

And finally, after the announcement of the first test for version 2.11.241 for Android, the app allows this new feature.

Previous updates of the service included improvements to the interface, visuals, among other elements; however, this new version of WhatsApp, as announced on its website, will not only improve its interface with animated icons and the option to hide notifications, it also promises to be a new and complete communication option for users.

Currently in beta testing, version 2.11.241 of WhatsApp can be downloaded from the app's website, and its final version, perfected and with any eventual failures fixed, still has no release date.

With over 450 million clients around the world, the new free voice calling service by WhatsApp is an open challenge for all telecommunication network operators who seek to offer new features to attract new users.

In recent weeks, the app which was bought by Facebook for $19 billion dollars, presented many changes and upgrades, but the new beta version is causing a stir for its new voice call feature.

However, there's still a long way before the new feature is fully operational. For the moment, the beta version is only available for Android and other systems like iOS, Windows Phone and Blackberry will have to wait until the final version is released in upcoming months.

© 2015 Latinos Post. All rights reserved. Do not reproduce without permission.