An incoming call reminder method, applied to a first electronic device, wherein the first electronic device is communicatively connected to a second electronic device, and the method comprises: in response to an incoming call received by the first electronic device, entering, by the first electronic device, an incoming call ringing state, wherein the incoming call ringing state is used to remind a user of the incoming call; when the first electronic device is in the incoming call ringing state, receiving, by the first electronic device, a first heartbeat packet sent by the second electronic device; and when the first electronic device is in the incoming call ringing state, sending, by the first electronic device, a first heartbeat response to the second electronic device, wherein the first heartbeat response is used to keep the second electronic device in the incoming call ringing state corresponding to the incoming call received by the first electronic device after the second electronic receives the first heartbeat response, and the second electronic device is in the incoming call ringing state when sending the first heartbeat packet; wherein the method further comprises: when the first electronic device is in a non-incoming call ringing state, receiving, by the first electronic device, a second heartbeat packet sent by the second electronic device, wherein the second electronic device is in the incoming call ringing state when sending the second heartbeat packet, the non-incoming call ringing state comprises any one of the following: answering the incoming call and hanging up; and in response to receiving the second heartbeat packet, skipping sending, by the first electronic device, a second heartbeat response to the second electronic device, so that the second device exits the incoming call ringing state. in response to an incoming call received by the first electronic device, entering, by the first electronic device, an incoming call ringing state, wherein the incoming call ringing state is used to remind a user of the incoming call; when the first electronic device is in the incoming call ringing state, receiving, by the first electronic device, a first heartbeat packet sent by the second electronic device; and when the first electronic device is in the incoming call ringing state, sending, by the first electronic device, a first heartbeat response to the second electronic device, wherein the first heartbeat response is used to keep the second electronic device in the incoming call ringing state corresponding to the incoming call received by the first electronic device after the second electronic receives the first heartbeat response, and the second electronic device is in the incoming call ringing state when sending the first heartbeat packet; wherein the method further comprises: when the first electronic device is in a non-incoming call ringing state, receiving, by the first electronic device, a second heartbeat packet sent by the second electronic device, wherein the second electronic device is in the incoming call ringing state when sending the second heartbeat packet, the non-incoming call ringing state comprises any one of the following: answering the incoming call and hanging up; and in response to receiving the second heartbeat packet, skipping sending, by the first electronic device, a second heartbeat response to the second electronic device, so that the second device exits the incoming call ringing state. when the first electronic device is in a non-incoming call ringing state, receiving, by the first electronic device, a second heartbeat packet sent by the second electronic device, wherein the second electronic device is in the incoming call ringing state when sending the second heartbeat packet, the non-incoming call ringing state comprises any one of the following: answering the incoming call and hanging up; and in response to receiving the second heartbeat packet, skipping sending, by the first electronic device, a second heartbeat response to the second electronic device, so that the second device exits the incoming call ringing state.