This is the 4030th most frequent Russian word.
мтс
"МТС" is an abbreviation for "Mobile TeleSystems," a Russian telecommunications company.
Here, 'МТС' is used as a proper noun to refer to a telecommunications company.
МТС предоставляет услуги мобильной связи.
MTS provides mobile communication services.
In this context, 'МТС' is associated with the brand name for describing a specific plan offered.
Я подключил тариф МТС для выгодного интернета.
I subscribed to an MTS plan for affordable internet.
Here, 'МТС' designates the service provider related to the user's account.