What is the mobile phone dynamic verification code?

Send a 6-digit number to your bound mobile phone, and just enter it. After writing the mobile phone number, click get verification code, and the server of your website will automatically generate a random number as verification code and record it temporarily. At the same time, the short message content and the user's mobile phone number will be submitted to the service provider through the verification code short message interface. I use Hu Yi Wireless. The service provider immediately sends the short message to the user's mobile phone; After receiving the short message, the user fills in the verification code, and then you compare the verification code filled in by the user with the verification code generated by the server. If they are consistent, the verification is successful.

First, there are several situations in which the mobile phone cannot receive the verification code:

1, the mobile phone is equipped with interception software.

2. The mobile phone is turned off, there is no signal for the time being, and it is overdue or stopped.

3. You can't receive SP message on the first day of recharging after the mobile phone is in arrears.

4. The user has set a blacklist on the operator side.

5. The mobile phone can't receive short messages of more than 70 words.

6. The mobile phone is used abroad or used overseas.

7. The SMS storage is full.

8. Mobile phone networks and operators have failed in some areas.

2. If you can't receive the SMS verification code, I suggest you investigate according to the above situation first, and refer to the following solutions:

1. Remove SMS interception of application software, or change your mobile phone.

2. Arrears for downtime are generally recovered within 24 hours after payment, and are basically recovered within 24 hours. I suggest you change your mobile phone number or pick it up the next day.

3. Contact the operator to cancel the blacklist.

4. If it is a signal network delay, you can try to get it later.