Yes, you can activate your Cash App card over the phone, for this should have a Cash application in it. If you don't have the Cash App on your phone, you can install it now and then proceed to activate the Cash App card. Following are steps you need to take to Activate Cash App card:
1. Open the Cash App on your mobile phone
2. Click on the Cash Card icon
3. Then choose the option of Cash App card activation
4. Now you need to select the CVV option
5. After this, enter the details from your cash card such as CVV, card number, Expiry date, etc.
Once you entered all the required details, your card will be activated over the phone.