How to hide numbers on telecom mobile phones to send messages and make calls?

This operator has a service called call hiding. You can apply for this service. Please check with your local business office for specific rates. It is mainly used to hide numbers for incoming calls, but not text messages.

1. Prepare a Telecom mobile phone. It must be from China Telecom. It has no effect on China Mobile and China Unicom;

2. Open the Telecom mobile phone and enter the number. Enter *67+phone number to call;

3. Now you can find a mobile phone to try, and the unknown number is displayed now;

4. This method has been blacklisted in the experiment.