T-Mobile US will introduce a customer referral program on 29 August offering a free unlimited LTE data upgrade for a year to Simple Choice customers who refer a new customer from Sprint, Verizon or AT&T, Telecompaper.com reported on Aug 22.

The referred new customer also receives unlimited LTE data for a full year at no additional charge. Current customers who already have unlimited LTE data will receive instead a USD 10 credit each month for a year. The limited time offer restricts each referrer to one new customer and is a response to Sprint\'s recent launch of a new offer for T-Mobile, AT&T and Verizon customers. Sprint\'s new Family Share Pack offers a USD 350 Visa prepaid card to customers who switch from another operator to buy out their current contract. T-Mobile chief marketing officer Mike Sievert derides Sprint for dropping its unlimited LTE plans for families while T-Mobile CEO John Legere criticizes Sprint and its other carriers in a blog post in which he describes them as "Un-carrier wannabes".