Iphone 12 daughter card cannot receive verification code SMS.

Mobile phone security software interception (for smartphone users who have installed security software): Turn on the mobile phone security software, temporarily turn off the interception function, and then try to obtain the verification code again.

Congestion or abnormality of SMS gateway: Congestion or abnormality of SMS gateway will cause delay or loss of sent SMS, so it is recommended to try to get it later.

People around you can use it normally, but they never use it: it may be the phone itself. It is recommended to change the mobile phone card to someone else's mobile phone and try again.

Extended data:

Precautions:

The advantage of the mobile secondary card is that you can enjoy the traffic in the package, so you can use it for the mobile secondary card if the traffic is not used up.

The advantage of the mobile secondary card is that it does not include other monthly fees, and it will save money if family members need to use calls and traffic.

The disadvantage of moving the secondary card is that it may cause the signal of the main card to deteriorate, and the main card can query the call record of the secondary card.

Baidu Encyclopedia -iPhone 12

People's Network-Beware of disputes caused by mobile phone traffic. Pay attention to the charges of the main card and the auxiliary card.