A control method for displaying a service identifier in an electronic device, the electronic device supporting a dual connection mode in which the electronic device is capable of establishing a first communication connection with a first network device, and is capable of establishing a second communication connection with a second network device, each of the first network device and the second network device being a network device in a first fifth generation 5G non-standalone NSA network, the first network device being a fourth generation 4G base station eNB; the second network device being a fifth generation 5G base station gNB; a core network of the first 5G NSA network being a next generation core network NGC, the first network device being in a communication connection with the second network device, and the first network device being in a communication connection with the NGC, the control method comprising: sending a query request for resource allocation information to the first network device, in response to the electronic device being detected to be in a downlink data service scenario; receiving the resource allocation information from the first network device; and determining and displaying a target service identifier of the electronic device based on the resource allocation information; wherein the resource allocation information comprises a first network resource block of the second network device; the determining and displaying a target service identifier of the electronic device based on the resource allocation information, comprises: determining a channel quality indicator of the second network device, in response to the first network resource block being less than a first threshold; determining the target service identifier as a first service identifier corresponding to the first network device and displaying the first service identifier on a display interface of the electronic device, in response to the channel quality indicator being less than a second threshold; and determining the target service identifier as a second service identifier corresponding to the second network device and displaying the second service identifier on the display interface of the electronic device, in response to the channel quality indicator being greater than the second threshold. sending a query request for resource allocation information to the first network device, in response to the electronic device being detected to be in a downlink data service scenario; receiving the resource allocation information from the first network device; and determining and displaying a target service identifier of the electronic device based on the resource allocation information; wherein the resource allocation information comprises a first network resource block of the second network device; the determining and displaying a target service identifier of the electronic device based on the resource allocation information, comprises: determining a channel quality indicator of the second network device, in response to the first network resource block being less than a first threshold; determining the target service identifier as a first service identifier corresponding to the first network device and displaying the first service identifier on a display interface of the electronic device, in response to the channel quality indicator being less than a second threshold; and determining the target service identifier as a second service identifier corresponding to the second network device and displaying the second service identifier on the display interface of the electronic device, in response to the channel quality indicator being greater than the second threshold. determining a channel quality indicator of the second network device, in response to the first network resource block being less than a first threshold; determining the target service identifier as a first service identifier corresponding to the first network device and displaying the first service identifier on a display interface of the electronic device, in response to the channel quality indicator being less than a second threshold; and determining the target service identifier as a second service identifier corresponding to the second network device and displaying the second service identifier on the display interface of the electronic device, in response to the channel quality indicator being greater than the second threshold.