Why can't some bank cards and some mobile phones receive short messages?

There are several possibilities for not receiving SMS: \x0d\ 1. The bank card does not have SMS reminder service, or the mobile phone number is reserved incorrectly; \x0d\2。 The account transfer amount did not reach the SMS reminder amount; \x0d\3。 The mobile phone or operator has blocked the SMS number of the bank, and the settings can be changed for mobile phone problems. Operators can consult customer service if they have problems. \x0d\4。 Problems in the banking system may cause delay, or poor signal may also cause information delay or failure to send; \x0d\5。 For two consecutive months, the SMS fee deduction was unsuccessful, and the status was arrears, so SMS reminders would not be sent.