Mobile banking allows inter-bank transfers to credit cards. The method is as follows (take the Postal Savings Bank mobile banking client as an example) : First, click the \"Postal Savings Bank\" mobile client on the mobile phone to enter the home page of the Postal Savings Bank mobile app. Step 2: Open the home page of PSBC mobile banking app and click \"My\" in the lower right corner to enter the login interface. The third step is to enter the account number and password on the login interface to successfully log in to the mobile bank. Step 4: Return to the home page of mobile banking and click the \"Smart transfer\" button on the upper right to enter the smart transfer interface. The fifth step is to enter the transfer amount, the name of the payee and the bank card number of the other party in the intelligent transfer interface. After entering the bank card number, the system will return the line name corresponding to the other party's card number. The user can check it by himself, and click \"Confirm\" to enter the payment interface. Step 6: Enter the payment password in the payment interface and click \"Confirm\" to submit. The sixth step, after submission, the system shows that it has been successfully accepted, and under normal circumstances, it can be received in real time.