Here are the steps on how to use Promo Codes when shopping at cricketwireless.com: Sign in to Cricket Wireless or create a new account to add your favorite products to your cart. Next, click on [Proceed to Payment], below the items listed, you will see a box that says [Add Coupon Codes]; tick the Cricket Wireless Coupons of your choice and automatically return to the checkout page, You will see that the actual payment total has been reduced.