What do you mean the other party is on the phone?

Indicates that the other party is having a voice or video call with others.

Voice call: the other party is busy, which means that the other party is using WeChat to make voice or video calls with other friends. When we choose the language of WeChat video call, we only need to use the call/recording function of the mobile phone. If the other party is using the call/recording function, it cannot be enabled or connected, which is similar to the busy line. If the other party doesn't hear or has no network, you can call, but it will show that the other party's mobile phone may not be around. If the other party refuses to answer, it will directly show that the other party refuses to call. Video call: If you choose video call, you need to use the camera of your mobile phone in addition to the call/recording function.

If it is detected that the camera of the other party's mobile phone is being occupied, it will also be invalid, thus prompting the other party to be busy. There is no beep, and the line is busy directly, indicating that the other party is on the phone, or someone has dialed the phone at the same time as before. The busy line after the dial tone means that the other party hangs up voluntarily, or the other party happens to have a power outage.