The bank card is bound with the mobile phone number. Every time I deposit money and withdraw money, I will send a text message to inform me how to charge the postal service. What if you change your nu

The bank card is bound with the mobile phone number. Every time I deposit money and withdraw money, I will send a text message to inform me how to charge the postal service. What if you change your number? Hello, China Postal Savings Bank's short message notification service for current account changes, 3 yuan/month, 30 yuan/year; Pay Notice, 1 yuan/month, 10 yuan/year; Withdrawal notice, 2 yuan/month, 20 yuan/year; Notice of account transfer, 2 yuan/month, 20 yuan/year; If you open SMS notification service to change your mobile phone number, please bring your ID card and bank card/passbook to the counter of the Postal Savings Bank of the province where you open the account to change your mobile phone number; I hope my answer is helpful to you.