How do I unlock borrow on cash app? To unlock borrow on cash app, you will first need to login to your account and sign in. After logging in, you will need to click on the "Borrow" tab. On the "Borrow" tab, you will need to enter in the amount you would like to borrow and the desired repayment period. After completing these steps, you will need to click on the "Submit" button. https://cashapphone.com/blog/how-to-unlock-borrow-on-cash-app