Recently, the number of China Unicom has always received spam messages, which is annoying. What should I do?

In this case, I suggest you contact Unicom customer service. They will check the sending of spam messages by number. If the circumstances are serious, it will be blacklisted to help you turn off the SMS function and hand it over to the relevant regulatory authorities for handling. Or you can download interception software, such as 360, Tencent housekeeper, but this kind of software can only intercept the same number. If it is a different number to send you a text message, it is not convenient to intercept it yourself.