Use your smartphone to get a free Classic Breakfast Sandwich with any purchase at Wendy’s when you place a mobile order. Just download the Wendy’s app and click the “Offers” tab located on the top of the screen. Select the free breakfast sandwich offer and choose how you want to get your food. Then add the a la carte sandwich to your cart (either bacon or sausage), along with another item. This offer is valid through July 5.