After dialing the phone number, a sentence will always pop up. What is this?

This is a mobile color printing service, which charges 2 yuan for one month and 22 yuan for one year.

When other China mobile users dial the tariff user after opening the color printing service, the calling party will see a text set by the called party after the ringing starts. The text is displayed on the mobile phone screen in USSD mode, which will automatically override the number displayed by the user on the screen.

The content of color printing can be words that express your feelings, jokes, epigrams, words that promote your works or company products, etc. You can let your mobile phone number know your mood, your favorite aphorisms, your job or the products you sell, etc. If the color printing is a joke, the other party can easily strike up a conversation with you. In short, color printing is equivalent to personalized call signature, so that users who call your mobile phone can know some information about you before the call starts.