Methods and devices for automatic display of prepay information

A mobile communication device for a wireless communication system, comprising:

• an obtaining module configured to obtain a service provider identity from a SIM;
• a processor configured to generate a balance information query to the service provider using the obtained service provider identity from the SIM;
• a query format determining module configured to determine a format of the balance information query particular to the service provider from a plurality of supported formats;
• a wireless transceiver;
• a memory configured to store format information including a format of a balance information message, among a plurality of supported formats, from a service provider to the balance information query;
• and
• a controller, coupled to the transceiver and the memory, configured to generate a communication to the service provider for transmission via the wireless transceiver, the communication being based on format information and including the balance information query, wherein the format information includes channel information for transmission to the service provider, the controller configured to determine whether an incoming message received by the wireless transceiver from the service provider conforms to the format of the balance information message and to write at least a balance information of the incoming message to the memory of the mobile communication device if the incoming message conforms to the format of the balance information message.