However, this number is not available how to activate cash app card. You can follow a few easy steps and the card will be activated. Firstly, you just need to open the Cash application on your device. Then click the Cash Card icon. After that, select the option to activate the Cash Application card. So, use your phone camera to scan the QR code. If done successfully, your card is ready to use. However, You should visit our website for more detailed information.