UAE Du and Microsoft are collaborating to test Voice over LTE (VoLTE) and successfully demonstrated it with the Nokia Lumia 830 smartphone at Dubai\'s Gitex trade fair from 12-16 October, Telecompaper.com writes on Oct 17, 2014. They are satisfied with the feature which allows connection to 4G while having an ongoing voice call. In other words, VoLTE enables simultaneous high-speed internet browsing or video streaming during a live voice call. Du is the first telecom service provider to install and test VoLTE on a live network in the region, and also the world\'s fastest at just 80 days.Gitex