The subscribers of "MTS connect is available through the self-service "Mobile assistant". It is only necessary to type on the keyboard of your phone short number 111 and press call and follow the voice instructions of the answering machine. There is another option of activation of the service "call barring: you can use the" Internet Assistant" (it is on the main page of the official website of the company). Management of service possible and by sending SMS: enter text 21190/2119, and then send it to number 111. In addition, subscribers of MTS can always send your written application by Fax (495) 766-00-58.
"Call barring" there is the communication operator "Beeline". Its subscribers can protect themselves not only from incoming calls, but SMS and MMS messages. To set a ban, you must send a special request to USSD-number *35*xxxx# (xxxx is your password). Default password is usually 0000. But it can change at any time. You only need to use the command **03** old password* new password#. Detailed information about the service is available toll-free number (495) 789-33-33.
Users of a network "the Megaphone" can block all incoming callsand outgoing (both international and on-net), receive messages (both SMS and MMS). To activate the ban you can, if you dial USSD-request *service code*password# and press the call button. By the way, the default password set by the operator, - 111. You need the service code you will find on the official website in the relevant section.
In that case, if you changed the default password, you lock it somewhere (write in Notepad, for example). Otherwise, then to restore it, you will have to contact customer service.