A mobile communication device including a wireless transceiver and a controller is provided. The wireless transceiver performs wireless transmission and reception to and from a service network. The controller determines whether a Radio Resource Control (RRC) security has been activated between the mobile communication device and the service network when receiving measurement configuration from the service network via the wireless transceiver. In response to the RRC security not having been activated and location information of the mobile communication device being present, the controller sends a first measurement report not including the location information of the mobile communication device to the service network via the wireless transceiver, or the controller does not send a second measurement report including the location information of the mobile communication device to the service network via the wireless transceiver.