To activate a cash app card by phone you have to follow these steps:

· Open the Cash App on mobile Phone and log into Cash App account.

· On the right side, click on the Cash Card icon.

· Here, you will see the option of the Activate Cash App card.

· Click on it for the activation process.

· After you need to use the mobile camera for the QR code scanning process

· Once to complete the QR code scanning, you will be notified about the Cash App card activation.