An application installation package obtaining method includes receiving, by a mobile device, a broadcast frame sent by a base station, where the broadcast frame includes application identification information and network access information. The application installation package obtaining method includes accessing, by the mobile device, a network according to the network access information included in the broadcast frame. The application installation package obtaining method includes obtaining, by the mobile device from the base station by using the network, an installation package of an application identified by the application identification information.