You can check bank card balances on your mobile phone. The following takes the Bank of China card as an example to show the process of checking the bank card balance:

(1) Log in to the Bank of China mobile APP and select "My Account" on the "My" page, as shown in the figure below:

(2) As you can see, the "Account Management" page displays n bank cards owned by the bank card owner. Select a bank card you need to query, as shown in the following figure:

(3) Enter the page about "Recent Transaction Details" and click "More", as shown in the figure below:

(4) In "More", you can click " "Filter" to select the start and end dates of the bank card transaction you want to query, and then click "Confirm", as shown in the figure below:

Extended information:

Bank card transaction There are generally two channels for inquiries: counter and electronic. In mobile online banking, you can generally check transaction details within one year for free. However, if you need a paper statement, you need to go to the counter to process it. In addition, if you want to query the transaction details for more than one year, the bank will charge a certain query service fee. The specific fee amount varies from bank to bank.

Reference materials:

People's Daily Online - Bank inquiry is free within one year, but there are many obstacles after one year