Why can't I get the qq verification code?

1, the verification code was intercepted as a harassing message.

2. The mobile phone is in arrears, and the verification code SMS didn't come.

3. The cell phone signal is poor and the verification code cannot be received.

There is something wrong with the mobile phone itself.

5. The mobile phone number is incorrectly bound.

6. The network connection is unstable.

7. Mobile phones are used abroad or overseas mobile phones are used.