Displaying prepaid account information at mobile station

A charging unit which manages financial transactions for a prepaid mobile station, the charging unit comprising:

• an account ledger which maintains a prepaid account balance value for a prepaid account for the prepaid mobile station;
• a prepaid account report generator configured to provide the prepaid mobile station with a graphical parameter, the graphical parameter being configured to express a relation of the prepaid account balance to a boundary value to enable the prepaid mobile station to generate a prepaid account graphical depictor on a display of the prepaid mobile station so that the prepaid account graphical depictor illustrates the prepaid account balance value in scaled relation to the boundary value, the boundary value being other than and less than a maximum allowed prepaid account value for the prepaid mobile station.

A method of managing a prepaid account for a prepaid mobile station, the method comprising:

• a charging system external to the prepaid mobile station providing to the prepaid mobile station over a radio interface a graphical parameter, the graphical parameter being configured to express a relation of a prepaid account balance for the prepaid account for the prepaid mobile station to a boundary value;
• the prepaid mobile station receiving and using the graphical parameter to generate a prepaid account graphical depictor on a display of the prepaid mobile station so that the prepaid account graphical depictor illustrates the prepaid account balance value in scaled relation to the boundary value, the boundary value being other than and less than a maximum allowed prepaid account value for the prepaid mobile station.