T2 provides an "SMS Filter" service for both individual and enterprise users, which automatically identifies and blocks suspected advertising and spam SMS. By leveraging algorithms to analyze SMS sender sources and content characteristics, the service helps users reduce unwanted promotional messages while preserving management flexibility for critical business communications. Enterprise users can also activate the service for employee numbers or business SIM cards to minimize disruptions to work communications from unsolicited marketing messages and potential phishing content.
The service connection fee is 0 rubles. A 24-hour free trial is available upon initial activation, after which the monthly fee is charged at a rate of 4 rubles per day. Users can activate the service by sending "старт" to 9361, dialing the USSD code 9368#, using the T2 mobile app, or accessing their personal account. To deactivate the service, users can send "стоп" to 9361, dial 9360#, or complete the process via the app or personal account.
The SMS filter typically blocks advertising and spam content automatically based on system identification rules, but automatic recognition is not 100% accurate. Legitimate enterprise notifications, bank OTPs, logistics reminders, or customer service messages may be blocked if their sender numbers, templates, or link characteristics resemble those of marketing SMS. Conversely, some spam messages that constantly change sender numbers and copywriting may temporarily bypass the filter. Therefore, users should combine operator-level filtering, device security settings, and personal vigilance to guard against fraud.
The service supports management of filtering results via personal account or the app. Users can view identified senders, adjust certain filtering settings, or modify preferences if false interception is detected. When enterprises centrally manage business numbers for employees, they should fully inform staff of the activation scope and handling procedures to prevent important business authentication, customer notifications, or security alerts from failing to be delivered due to the filtering mechanism.
For enterprises that send SMS messages, the rollout of filtering services indicates reduced market tolerance for unauthorized, frequent, or non-transparent commercial SMS. Enterprises should use compliant sender identities, avoid short links, exaggerated promotional language, and unrecognizable numbers, and maintain records of user consent and opt-outs to reduce the risk of their legitimate notifications being incorrectly classified as spam.
