Now all VivaCell-MTS subscribers have an opportunity to stay informed about the validity period and the account balance of their close prepaid subscribers, and in case of an opportunity to recharge the account.
To use the “SOS” service one simply needs to send a request mentioning the phone number of the prepaid subscriber and the sum, reaching which, the subscriber wants to be notified about.
The request command should be sent in the following format: *155*phone number of the prepaid subscriber*sum# (e.g. *155*093298888*200#).
The prepaid subscriber will be notified that a request has been sent for being informed about the account balance and validity period of his card and will decide whether to confirm the request or not.
To confirm the request the prepaid subscriber needs to send *155*requester phone number#.
The service is free.
