There was a phone call just now, and the mobile phone said "advertising sales". What's that for?

Explain that the phone number is used to promote some products. After being complained or reported by many people, it will be marked. He calls someone, and the other person's mobile phone will display advertising promotion.

Don't answer this call, just hang up to avoid being cheated.

If you don't want to receive similar calls, it is recommended to download Tencent Mobile Manager or 360 Security Center with your mobile phone and set up automatic interception of such harassing calls. You won't receive it. Can avoid a lot of trouble.