To open the cloud network function of ABC APP, you need to download and install ABC Pocket Banking APP first. Then, click Login in the APP to enter the account interface. Next, click "My Account-Debit Card Service-Cloud Card Application". On the application page, you need to read carefully and agree to the relevant agreement. Click Next after confirmation. Finally, after checking that the information is correct, click the "Confirm" button to successfully open the cloud network function.