A mobile communication device for a wireless communication network includes an evaluation module, a determination module and an informing module. The evaluation module evaluates a connection ability between the mobile communication device and a plurality of base stations. The determination module determines whether a report is to be issued according to the connection ability and a customized rule different from a standard rule. The standard rule corresponds to a threshold of the connection ability defined by the wireless communication network. When a determination result of the determination module is yes, the informing module issues the report to the wireless communication network.