Why does the text message show that it was sent by Beijing?

This is a scam routine. We suggest that you don't call the other party and don't reply to any information. Just delete it directly to avoid personal privacy information being stolen.

Maybe your mobile phone was taken from a thief by an illegal vendor, because the original mobile phone owner may have installed mobile phone security software, but it is only possible, and it is also possible that your mobile phone has been hit by a Trojan horse.

Back up your information, and then set up and reinstall the software in the factory.