In view of the foregoing, an improved handheld electronic device includes a keypad in the form of a reduced QWERTY keyboard and is enabled with disambiguation software. This design reduces unwanted oropharyngeal deposition of medicament and increases the relative amount of medicament to the lung. The server determines whether the UE is associated with an enterprise identified by a service provider of the network as a sponsor of a data service through the network, based on an account of the UE stored on the server.