Non-standard works spread illegal, pornographic, violent, bloody and other illegal acts, and platform restrictions cannot spread negative energy.
It may be that the other party is on the phone or playing video with others, and the other party has turned on do not disturb mode. Whether it is a WeChat message or a video, there will be no prompts. When the network signal is not good, the other party will be hung up if there are obstacles in the tall building or elevator and the signal is not good.