Why does the mobile phone bound by Alipay open a short message but can't receive the information?

There may be the following situations, and the bound mobile phone number cannot receive information:

1. is caused by abnormal network communication, so it is suggested to try another time.

2. Whether there is downtime and arrears;

3. Whether to turn on the SMS interception system or install SMS interception software, it is recommended to replace the mobile phone card with another mobile phone to try;

4. If the fast payment operation has been modified in Alipay, but it has been sent to the original mobile phone, please contact the bank to modify the mobile phone number reserved by the bank;

5. Currently, only mainland mobile phones are supported. If it is a non-mainland mobile phone, the check code is unacceptable.