An information transmission method, wherein the method is applied to a system, the system comprises a first electronic device and a second electronic device, the first electronic device is connected on 5 GHz, the second electronic device supports only 2.4 GHz, and the method comprises: performing, by the first electronic device, listening on a 2.4 GHz channel; transmitting, by the second electronic device, a first probe request frame associated with the listening on the 2.4 GHz channel to the first electronic device; transmitting, by the first electronic device, a first probe response to the second electronic device; establishing, by the first electronic device, a peer to peer, P2P, connection with the second electronic device; and transmitting, by the second electronic device, information to the first electronic device; wherein before the performing, by the first electronic device, listening on the 2.4 GHz channel, the method further comprises: performing, by the first electronic device, listening on a 5 GHz channel; transmitting, by the second electronic device, a second probe request frame associated with the listening on the 5 GHz channel to the first electronic device; and skipping transmitting, by the first electronic device, a second probe response to the second electronic device, wherein a time length of listening performed by the first electronic device on the 2.4 GHz channel is less than a time length of listening performed by the first electronic device on the 5 GHz channel before the listening performed by the first device on the 2.4 GHz channel. performing, by the first electronic device, listening on a 2.4 GHz channel; transmitting, by the second electronic device, a first probe request frame associated with the listening on the 2.4 GHz channel to the first electronic device; transmitting, by the first electronic device, a first probe response to the second electronic device; establishing, by the first electronic device, a peer to peer, P2P, connection with the second electronic device; and transmitting, by the second electronic device, information to the first electronic device; wherein before the performing, by the first electronic device, listening on the 2.4 GHz channel, the method further comprises: performing, by the first electronic device, listening on a 5 GHz channel; transmitting, by the second electronic device, a second probe request frame associated with the listening on the 5 GHz channel to the first electronic device; and skipping transmitting, by the first electronic device, a second probe response to the second electronic device, wherein a time length of listening performed by the first electronic device on the 2.4 GHz channel is less than a time length of listening performed by the first electronic device on the 5 GHz channel before the listening performed by the first device on the 2.4 GHz channel. performing, by the first electronic device, listening on a 5 GHz channel; transmitting, by the second electronic device, a second probe request frame associated with the listening on the 5 GHz channel to the first electronic device; and skipping transmitting, by the first electronic device, a second probe response to the second electronic device, wherein a time length of listening performed by the first electronic device on the 2.4 GHz channel is less than a time length of listening performed by the first electronic device on the 5 GHz channel before the listening performed by the first device on the 2.4 GHz channel.