10086 Send me a text message asking me to take my ID card to the business hall for real-name authentication. Is this fraud?

If there is no real name registration when handling the mobile phone card, you need to re-authenticate. If you apply for an ID card, you don't need authentication.

It is recommended to call 10086 or consult with the local business hall. Don't return the phone number on the text message. It may be fraudulent information sent by using pseudo base stations.