Bank card withdrawal, mobile phone text messages can not be received

There are generally several reasons: 1. SMS reminder service has been cancelled (it may be cancelled by itself, or it may be cancelled automatically when it expires), 2. There may be something wrong with the cell phone signal. It may be a problem with the banking system (but this possibility is relatively small, unless the system is upgraded in advance, etc. ), 4. The mobile phone has no SMS function (generally this problem will not occur).