The portable electronic device 200 connects (step 739) to the intelligent multimedia playback device 250 in the same network. Optionally, a connection manner is that the portable electronic device 200 sends, to the intelligent multimedia playback device 250, a login account bound to the portable electronic device 200. If the intelligent multimedia playback device 250 determines that a received login account is the same as a login account of the intelligent multimedia playback device 250, a connection may be established. For example, the mobile phone 407 sends a login account of the mobile phone 407 to the smart television 111 and the smart speaker 113. After verification succeeds, the smart television 111 and the smart speaker 113 each optionally return a return code indicating that the connection succeeds. After verification fails, the smart television 111 and the smart speaker 113 each optionally returns a return code indicating that the connection fails.
In some possible implementation solutions, the portable electronic device 200 is connected only to a device whose device type is the intelligent multimedia playback device 250. In some possible implementation solutions, in addition to the device whose device type is the intelligent multimedia playback device 250, the portable electronic device 200 is further connected to another type of intelligent electronic device. In some other implementation solutions, the portable electronic device 200 is connected to all types of intelligent electronic devices.