MOSCOW, November 15, 2016 /PRNewswire/ -- Mobile TeleSystems PJSC ("MTS" or "the Company"- NYSE: MBT; MOEX: MTSS), the leading telecommunications provider in Russia and the CIS, and Samsung Electronics,theglobalconsumer electronics and ITcompany, announcethe launch of Wi-Fi calling in Russia enabling subscribers to make voice calls wherever there is a Wi-Fi connection (Voice over Wi-Fi). (Logo: http://photos.prnewswire.com/prnh/20121115/AQ14468LOGO ) Voice calls using the Wi-Fi calling technology do not require customers to install any applications. Once customers enable the Wi-Fi calling option on their smartphone, voice calls will be automatically redirected to the Voice over Wi-Fi format, with the Wi-Fi connection acting as a base station for the customer. The key difference from existing OTT services is that a voice call is still processed using a mobile operator's network and for the subscriber it appears as an ordinary call from one mobile number to another. Wi-Fi Calling technology enables users to make calls from locations that may be less well served by traditional cellular networks but where there is a stable Wi-Fi connection. The service is priced under current tariff plans as an ordinary call. The service will launch in Moscow and the Moscow Region first and will be available initially to Samsung Galaxy S7 and S7 edge users. The service will then be rolled out over wider geographical coverage and an increasing range of devices over the course of 2017.