How did the mobile phone receive the verification code?

Knowing how the SMS verification code comes from, let's first talk about what sms channel and sms channel are, in short, the sending pipeline of SMS, and realize the mass sending of SMS by docking the gateway of the operator or the third-party platform.

At present, there are mainly single-network channels of China Mobile (10657), China Unicom (10655) and China Telecom (10659). Support the whole network to send, namely the whole network (10690); Supporting provinces to send is the provincial network channel. The channel among that three major operators are independent. It means mobile, only mobile phone number, Unicom, only Unicom number, telecom, only electric signal. 10690 channels can send the numbers of mobile, China Unicom and telecom operators.

The types of current channels are mainly divided into:

Operate SMS channels starting with 1 and 106.

2. Area code, such as the virtual gateway channel starting with 0755, 02 1, (similar to point-to-point transmission, mainly calling the number in the operator's number pool for polling transmission, rather than sending it directly through the mobile phone).

3. There is also a card issuing channel for SMS group cats.

4. Of course, there are short messages sent by pseudo base stations (of course, this is illegal and has been strictly investigated. For internet products, it's useless, most of them are highly targeted and violent information), so I won't mention it.

In terms of channel quality, 106 is better than virtual off, and virtual off is better than card.

If you want to know more about SMS verification code, you can visit Jinlou Century official website.