A mobile communication device for use in a packet switched wireless
communications network includes a display, which is able to indicate an
amount of data remaining from a subscribed amount. This allows the user
to see how much data he can send or receive, within a prepaid
subscription. The display is graphical, allowing the user to judge the
amounts of data easily, as well as numerical. Advantageously, the mobile
communication device calculates the amounts of data sent and received in
such a way that it avoids double counting of retransmissions.