MTS, headquartered in Moscow, is the largest mobile network operator in Russia, operating on GSM, UMTS and LTE standards. Apart from cellular network, the company also offers local telephone service, broadband, mobile television, cable television, satellite television and digital television.

In telecommunications, long-term evolution (LTE) is a standard for wireless broadband communication for mobile devices and data terminals, based on the GSM/EDGE and UMTS/HSPA standards. It improves on those standards' capacity and speed by using a different radio interface and core network improvements. LTE is the upgrade path for carriers with both GSM/UMTS networks and CDMA2000 networks. Because LTE frequencies and bands differ from country to country, only multi-band phones can use LTE in all countries where it is supported.