Abstract: A screen casting method is applied to a source device having a display and a speaker. The screen casting method includes receiving first data and decoding the first data, displaying the decoded first data through the display and/or outputting the decoded first data through the speaker, receiving text information from the server and parsing the text information, and displaying the parsed text information through the display, where the text information is associated with the first data. A first operation of performing screen casting to a target device is detected, and in response to the first operation, sending a download address of the first data and a download address of the text information to the target device.

Abstract: A first terminal device obtains a message record of the first terminal device, and obtains a message record of a second terminal device, where the message record of the first terminal device includes message content of a first message and a causal time of the first message, and the message record of the second terminal device includes message content of a second message and a causal time of the second message. The first terminal device sorts the message content of the first message and the message content of the second message based on the causal time of the first message and the causal time of the second message, and displays the message content of the first message and the message content of the second message in sequence.

Abstract: A terminal, headset, and system, where the headset is configured to determine a wearing mode of the headset, generate a wearing mode signal according to the wearing mode of the headset, and send the wearing mode signal to the terminal, the terminal is configured to receive the wearing mode signal, and control, according to the wearing mode signal, sound channel output of an audio signal played by the terminal. In this manner, when the headset is reversely worn, the terminal may automatically perform headset sound channel switching. Hence, a user can implement sound channel switching without transposing left and right earpieces of the headset, thereby improving headset sound channel switching efficiency.

Abstract: A first terminal device obtains a message record of the first terminal device, and obtains a message record of a second terminal device, where the message record of the first terminal device includes message content of a first message and a causal time of the first message, and the message record of the second terminal device includes message content of a second message and a causal time of the second message. The first terminal device sorts the message content of the first message and the message content of the second message based on the causal time of the first message and the causal time of the second message, and displays the message content of the first message and the message content of the second message in sequence.

Abstract: A service connection control method and a terminal, where the method includes detecting, by the terminal, that a network signal is interrupted, maintaining, by the terminal, a first service connection to a server, where the first service connection is used for communication between the server and the terminal before the network signal is interrupted, detecting, by the terminal, that the network signal recovers to normal, and reusing, by the terminal, the first service connection when an Internet Protocol (IP) address of the terminal does not change within a first time interval, where the first time interval is a time interval between a moment at which the network signal is interrupted and a moment at which the network signal recovers to normal.

Abstract: A terminal, headset and system, where the headset is configured to determine a wearing mode of the headset, generate a wearing mode signal according to the wearing mode of the headset, and send the wearing mode signal to the terminal, the terminal is configured to receive the wearing mode signal, and control, according to the wearing mode signal, sound channel output of an audio signal played by the terminal. In this manner, when the headset is reversely worn, the terminal may automatically perform headset sound channel switching. Hence, a user can implement sound channel switching without transposing left and right earpieces of the headset, thereby improving headset sound channel switching efficiency.