Is it true that Unicom sends short messages?

Unicom's ports for sending epidemic prevention messages are: zero zero zero, the cornet beginning with zero six five five, one two three seven nine zero two.

If it is not the SMS port of the above operator, don't click the link attached to the SMS to avoid being deceived. Especially the numbers that start with "plus sign", be more careful. Once you click on the link in the short message, your personal information is likely to be stolen.