How to send a message without displaying the number?

You can't hide the number by texting, but you can hide the number by calling.

There are two ways:

First, the use of VoIP

VoIP refers to the traditional telephone charges of 10% to 20% for making direct calls to the other party's fixed and mobile phones through the Internet, including domestic and international long distance calls.

Macroscopically, it can be divided into software mobile phones and hardware mobile phones. Software phone is to download the software on the computer, then buy a network phone card and make a phone call with the other party's mobile phone through headphones; Hardware telephone is more suitable for companies, telephone bars and so on. First, you need a voice gateway. One side of the gateway is connected to the router, and the other side is connected to the ordinary telephone, and then the ordinary telephone can be freely called out directly through the network.

Second, open the call hiding.

Refers to the refusal to display the calling number on the other party's mobile phone when making a call after the fixed line or mobile phone has applied for service. Also called calling number rejection. People in the industry call this value-added service "CLIR" (whether the called party has applied for the calling number display function or not).

According to the different terminals of the called user, the information refused to be displayed is generally "-p-", "unknown", "no calling number", "confidential incoming call" and "private number". The called user can't identify the caller and can't call back, query and save.

This business is mainly used in secret organs, military and other special industries, not mainly for ordinary individuals.