I can't get the message when I change the 4g card.

Upgrading the mobile phone's 4G card is not necessarily related to not receiving bank messages.

The 4G card is mainly used to improve the Internet access speed, and the maximum uplink speed can reach 50mbps. The SMS reminder of the bank card should be an open SMS service, which has nothing to do with the mobile phone service of replacing the 4G card.

It is suggested to call the customer service hotline of the bank to check whether the subscribed SMS service is unsubscribed or whether it is caused by an abnormality in the banking system.

Or check to see if there is housekeeping software that intercepts bank messages.