When the mobile phone handles the call hiding service, dial #3 1#+ the other party's mobile phone number to realize the call hiding number. Calling hidden service users can apply for opening or cancellation in self-operated hall, 10086, handheld business hall, mobile company portal website and SMS business hall with valid certificates or business passwords.

The extended data calling number hides the business that the calling number is not displayed to the other party when the user calls. Call hiding is only open to GSM (upgraded version) customers, but it can only be opened after application; For cards with double numbers and minor numbers, the calling number is hidden by default.

Call hiding service is free of opening fee, and service function fee 10 yuan/month is charged by the day and supplemented at the end of the month. Each call is still charged according to the communication fee standard of the existing package.

After the call hiding service is enabled, you can set whether to hide the call number before making a call.

References:

China Mobile-Call Hiding