Why is ICBC information sent to other people's mobile phones?

Keep someone else's cell phone number When the customer's bank card account information changes, the mobile phone number left in the bank will be notified by SMS. The reason why the SMS notification of ICBC information appears on other people's mobile phones is because the mobile phone number left when the SMS reminder service of bank card is opened is someone else's. The solution is that customers bring their ID cards and bank cards to the bank to change their SMS mobile phone numbers. The mobile phone number reserved by the bank refers to the mobile phone number left by the cardholder when opening the bank card. The mobile phone number is used to receive the information of bank card consumption and bill change, and obtain the verification code when paying. When a bank opens a card, it is required to reserve the mobile phone number, just for the convenience of checking and information contact when handling business. There is no strict requirement that it must be the real name number of the handler's own mobile phone. Generally, it is only required to be his own mobile phone number as far as possible, which is more convenient to contact.