Связь Сразу is a mobile application designed for clients, offering a convenient way to manage SIM cards and services all within a single interface. The app provides essential features for subscribers, including a user-friendly interface for checking balances, internet usage, minutes, and SMS directly on the main screen. Users can easily top up their balance in a few clicks, select and change tariffs, and add extra services as needed, specifying the desired minutes, gigabytes, and SMS messages. Detailed billing can be requested for expense monitoring, and support is available through the "Support" section or chat for assistance. The app also offers information on roaming and international calls, with convenient login options via code or biometrics.