tóupíng shībài shí, xiān kàn shǒujī hé diànshì shì bùshì tóng yī gè wǎngluò, zài kàn píngtái shìfǒu zhīchí tóupíng

投屏失败时，先看手机和电视是不是同一个网络，再看平台是否支持投屏。

When screen mirroring fails, first check if the phone and TV are on the same network, then check if the platform supports screen mirroring.