Find the nearest MTS store or WiFi hotspot Mobile TeleSystems OJSC (MTS) is the largest mobile phone operator in Russia and the CIS. MTS services over 91.33 million subscribers. MTS provides mobile communications in Russia, Ukraine, Uzbekistan, Turkmenistan, Armenia and Belarus. Please visit one of our stores or our Internet shop to connect to MTS. We will help you choose the optimal tariff plan, a new mobile phone or USB-modem to access the internet and will help you set up your equipment. We will be glad to see you!