2016-04-07 10:10:23 epa05247661 The logo of the messaging application WhatsApp is pictured on a smartphone in Taipei, Taiwan, 07 April 2016. WhatsApp on 05 April 2016 rolled out its end-t-end (E2E) encryption for its more than one billion users. The most popular messaging application is owned by Facebook. EPA/RITCHIE B. TONGO