Earn cashback to your mobile bill when you use Airtime Rewards. Join for free, link your card & automatically earn cashback as you shop. Let your favourite retailers pay for your mobile bill. Download the app or use online. Retail partners include Boots, Argos, Wilko, B&Q, Caffe Nero, Waitrose, Topshop, Topman, River Island, Pizza Hut, PizzaExpress & Many more.