I lost the mobile phone number bound by the Postal Savings Bank. How can I change it to another number?

Hello, 1. If you mean the mobile phone number bound by the SMS notification service for the change of current account; You need to bring a valid ID card, bank card or passbook to the business hall of China Postal Savings Bank in the province where the account is opened for modification; 2. If you intend to modify the mobile phone number bound by online banking, you can modify it at any postal savings bank outlet in China that has opened the online banking counter business; 3. If you refer to the mobile phone number bound by TenPay, those who have registered personal online banking can log in to online banking, and click Apply Start-Online Payment-Mobile phone number modification to operate; If personal online banking has not been opened, you need to bring a valid ID card, bank card or passbook to any China Postal Savings Bank outlet to modify your mobile phone number; 4. To handle Alipay cartoon function, modify the mobile phone number and website of the SMS verification code; Modifying the mobile phone number that receives the SMS notification of fee deduction shall be handled at the counter of Postal Savings Bank (nationwide) or online banking of Postal Savings Bank; 5. If you modify the mobile phone number reserved when opening an account, you need to bring your ID card, bank card or passbook to the counter of the Postal Savings Bank in the province where the account is opened; I hope my answer is helpful to you.