1. First log in to your bank account. Whichever bank you open an account with, open the homepage of that bank. Then log in to the account at the user login portal on the home page.

2. After logging in, there is a customer service option in the menu bar above the personal homepage. Click this option with the mouse.

3. Under the customer service options, there is an option menu for online banking security management. Click this menu with the mouse.

4. After clicking the option of online banking security management, a menu with four small options will pop up. In this menu, click on the security certification mobile phone number, and then click on the registered security certification mobile phone number on the right .

5. In the step of registering the number, first select the account, then enter the mobile phone number. After the input is completed, click the button to get the mobile phone verification code.

6. After clicking the button, a text message will be sent to the mobile phone with a verification code displayed on it. Enter this verification code into the space of the mobile phone verification code, and then click the submit button.

7. This way you can bind your mobile phone number. If you change your mobile phone in the future, you can repeat the steps just now, but in the online banking security management options, choose to modify the security authentication mobile phone number.

Bank cards generally have the following seven functions: savings and deposits and withdrawals, consumer payments, transfer settlement, collection and payment, consumer credit, comprehensive financial management and derivation functions, etc. If you hold a bank card, you can go to the outlets or ATMs designated by the card-issuing bank to handle deposits and withdrawals, or you can swipe your card to make purchases at merchants with POS machines; you can complete transactions between cards, between cards and accounts, and even without a card. Transfer business between cards and accounts; you can also deduct water, electricity, gas, etc. through bank cards; you can apply for loan financing through bank cards and complete the purchase of investment products such as stocks, funds, and foreign exchange transactions; if you hold Credit cards can also be used as overdrafts for consumption.

Introduction to bank card functions:

1. Deposit and withdraw cash. Most debit cards have local and foreign currency, fixed-term, current and other savings functions. Debit cards can be deposited and withdrawn at the bank outlets that issued the debit card, self-service banks, and ATM machines (cash machines) across the country and even around the world.

2. Transfer and remittance. Cardholders can transfer or remit money to other accounts through bank branches, online banking, self-service banking and other channels.

3. Spend by credit card. Cardholders can use their debit cards to make purchases at merchants.

4. Collection and payment. Debit cards can be used to pay wages and pay various fees (such as communication fees, water bills, electricity bills, gas bills, etc.).

5. Asset management. Wealth management products, open-end funds, insurance, personal foreign exchange transactions, precious metal transactions, etc. can all be signed, traded and settled through debit cards.

6. Other services. The services of many bank debit cards have extended beyond financial services, such as providing cardholders with airport VIP access, medical and health services, etc.

Operating environment: Online banking App version model: 8.1.16