Techniques for managing a plurality of mobile communications devices by an enterprise server are described. The mobile communications devices may be configured to communicate on a mobile communications network operated by a mobile network operator. A communicative link is established with a proxy interface configured to implement a standardized interface for exchanging information between the enterprise and the mobile network operator. Data is received by the enterprise server via the proxy interface. The data is associated with subscription services for a plurality of mobile communications devices that are operable on the mobile communications network. The subscription services are associated with the mobile network operator. Requests are sent by the enterprise server via the proxy interface. The requests are for updating the subscription services of the mobile network operator.