Why can't JD central in Thailand receive the verification code?

1. Interception software is installed on the mobile phone.

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

3. I can't receive SP message on the first day after the phone is in arrears.

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

The verification code is a public automatic program, which is used to distinguish whether the user is a computer or a person. It can prevent malicious password cracking, ticket brushing and forum flooding, and effectively prevent hackers from constantly trying to log in to specific registered users and use specific programs for violent cracking. In fact, using verification code is a popular way for many websites now, and we have realized this function in a relatively simple way.