Unicom Card recently received a message of 10690. What is this?

It's normal, this kind of short message is generally marketing, and now all kinds of advertisements are overwhelming. SMS is just one of them, not a fatal event. If you don't want to receive it, you can unsubscribe by replying n or t 0000 according to the content prompt. Even if it is not completely eliminated, it can be reduced by a large part. I hope I can help you.