Tianjin Kayudi Medical Laboratory did not receive the verification code.

The reasons why Tianjin Kayudi Medical Laboratory did not receive the verification code are as follows:

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. There is a mobile phone network and operator failure in this area.