Why can't I receive the SMS verification code? What is the reason why Apple can't receive SMS verification code?

System: iOS 16.0

Reasons for not receiving SMS verification code:

1, the phone storage is full. Many people like to download many applications to their mobile phones, which leads to insufficient memory. If there is no place to store messages, they won't receive them. The processing is very simple, just uninstall the software that has not been used for a long time in the mobile phone and clean up some memory.

2. establish a blacklist. Smartphones have blacklist and spam automatic interception functions. If you don't receive the message, it is very likely that you have been blacklisted or blocked as spam messages. The solution is to close the blacklist.

3, mobile phone arrears. Maybe the phone has been shut down, so I can't get the message. Pay the phone bill and it will be solved.

4, wireless network, communication and other delays. Due to network or geographical problems, the authentication information sent by the server may be delayed. The solution is to wait patiently.

5. The cell phone signal is poor. For example, cell phone signals in subways, elevators and some buildings are very weak. At this time, you can try to get the SMS verification code again in the place where the cell phone signal is good.

6. The mobile phone inbox is full. If the inbox receives too many messages, especially non-smart phones, you won't receive other messages. You can delete the message you received before and try again.

7. Blacklist of mobile phone numbers. If there is a complaint SMS record, the mobile phone number is blacklisted by the operator, which makes it impossible to receive the verification code SMS. In this case, you can contact the operator to cancel the blacklist and try again.

8. Dual-card mobile phones affect SMS reception. Dual-card dual standby mobile phone, if you can't receive SMS verification code, you can take out another card and try again.

9. The number of short messages sent by your mobile phone exceeds the maximum limit of one day. This is also to avoid SMS bombing and waste of resources. In this case, it cannot be operated on the same day.

10, mobile phone service is not supported. Mobile phone numbers in Tibet, Xinjiang, Hong Kong, Macao and Taiwan and overseas or using mobile phones abroad will be restricted by mobile telephone service operators, so they will not receive verification codes. Suggest trying to change another mobile phone number.

1 1. The reserved numbers are inconsistent. If you don't receive the SMS verification code during the fast payment process, your reserved number may be inconsistent.