A wireless device capable of communicating over a first wireless network and a second wireless network, the wireless device comprising one or more processors for executing one or more agents including an application interface agent for assisting in applying a policy by communicating with a software component associated with a service activity, the policy for reducing data usage over the first wireless network associated with the service activity, the policy enabling control of the service activity on the first wireless network that is different from how the service activity is controlled on the second wireless network, the one or more agents configured to: obtain a user input specifying at least an aspect of the policy, identify that the wireless device is connected to the first wireless network, identify an intended, attempted, or successful data communication over the first wireless network associated with the service activity, and apply the policy.