Three Chick-fil-A locations confirmed they've offered the promotion at their restaurants.Gary Hershorn/Getty ImagesSome Chick-fil-A locations have been promoting phone-free dining with ice cream rewards.The "Cell Phone Coop Challenge" encourages diners to put their phones down during their meals.Franchisee Brad Williams brought the trend back in January, and a Maryland location followed suit.Some Chick-fil-A restaurants have …

