The mobile 4g signal is too poor, and sometimes receiving the SMS verification code will be delayed for a few minutes.

Reason one: the mobile phone network is in poor condition, and the signal is poor, so the mobile phone can't receive the signal.

Observe whether the cell phone signal is full. If the cell phone signal is weak, you can try to go outside. Or shut down for 30 minutes; Or take out your phone's SIM card and try again with another phone.

Reason 2: Your mobile phone has some software to intercept short messages.

Think about whether you have set up a blacklist of contacts, or in which software; Find and open the blocked SMS software to view the blocked SMS,

Reason 3: Maybe you have applied to the operator to block the SMS number, or added a blacklist.

This situation is rare. If this is the case, you can call the customer service phone of the corresponding operator to verify the matter.

Reason 4: Alipay's current mobile phone number is inconsistent with the fast payment reservation number.

If you are in the process of fast payment, you can't receive the SMS check code. On the one hand, the system may be delayed and wait patiently. If you don't receive it, it may be that the phone number reserved at the counter when you open the bank card is not the number you are using now.

Reason 5: The mobile phone is in arrears or down.

Verify that the mobile phone is in a normal state to receive short messages, and can't receive short messages when it is down or in arrears.

Generally speaking, it is a very small probability that the mobile phone does not receive the SMS check code. Most of these situations are external reasons: network delay, poor network conditions, or mobile phone setting problems: the system number is set to the blacklist by mistake, so you just have to wait patiently and gradually eliminate it. First, check whether the number provided by the service provider corresponding to the verification code is the number you are currently using. If so, troubleshoot network problems and mobile phone problems. If the supplier still doesn't receive it at last, it is recommended to unplug the SIM and try another mobile phone.