A management method for supporting multiple SIM cards to share an RF processor, wherein the method comprises: receiving a resource request sent by a first baseband communications processor, wherein the first baseband communications processor is configured to implement a first communications service on a first SIM card, the resource request is used to request, in response to the first communications service, a permission to use the RF processor, and the resource request comprises a type of the first communications service and a time period required for using the RF processor; determining whether the RF processor is authorized for a second baseband communications processor to perform a second communications service on a second SIM card in at least a part of the time period; when the RF processor is authorized for the second baseband communications processor to perform the second communications service in at least the part of the time period, determining whether the second communications service is preemptible and when the second communications service is preemptible, comparing whether a priority of the type of the first communications service is higher than a priority of the type of the second communications service; when the priority of the type of the first communications service is higher than the priority of the type of the second communications service, sending a first authorization message to the first baseband communications processor, coupling the first baseband communications processor to the RF processor and instructing the second baseband communications processor to stop performing the second communications service, wherein the first authorization message is used to authorize the first baseband communications processor to use the RF processor to perform the first communications service and when the priority of the type of the first communications service is lower than or equal to the priority of the type of the second communications service, sending a resource request failure message to the first baseband communications processor, wherein the resource request failure message is used to indicate that the first baseband communications processor is not authorized to use the RF processor to perform the first communications service; and providing, by the RF processor, an RF communications link for the first communications service when the first baseband communications processor is authorized to use the RF processor. receiving a resource request sent by a first baseband communications processor, wherein the first baseband communications processor is configured to implement a first communications service on a first SIM card, the resource request is used to request, in response to the first communications service, a permission to use the RF processor, and the resource request comprises a type of the first communications service and a time period required for using the RF processor; determining whether the RF processor is authorized for a second baseband communications processor to perform a second communications service on a second SIM card in at least a part of the time period; when the RF processor is authorized for the second baseband communications processor to perform the second communications service in at least the part of the time period, determining whether the second communications service is preemptible and when the second communications service is preemptible, comparing whether a priority of the type of the first communications service is higher than a priority of the type of the second communications service; when the priority of the type of the first communications service is higher than the priority of the type of the second communications service, sending a first authorization message to the first baseband communications processor, coupling the first baseband communications processor to the RF processor and instructing the second baseband communications processor to stop performing the second communications service, wherein the first authorization message is used to authorize the first baseband communications processor to use the RF processor to perform the first communications service and when the priority of the type of the first communications service is lower than or equal to the priority of the type of the second communications service, sending a resource request failure message to the first baseband communications processor, wherein the resource request failure message is used to indicate that the first baseband communications processor is not authorized to use the RF processor to perform the first communications service; and providing, by the RF processor, an RF communications link for the first communications service when the first baseband communications processor is authorized to use the RF processor.