Take ICBC as an example. You can check the card number of the bank card through ICBC Mobile Banking, which can be downloaded from major mobile app stores. The specific viewing method is as follows:

First, click the "Industrial and Commercial Bank of China" icon on the mobile phone desktop, as shown in the figure.

2. After entering, select the "My Account" option, as shown in the following figure.

Third, you can check the card number of the bank card after entering, as shown in the figure below.