Social Media T-Mobile gets major traction with Twitter-race giveaway The cellular carrier scored big, promoting its new branding effort with a retweet competition that offered a cash prize and free phones. By Matt WilsonJune 19, 2012 SHARE To read the full story, log in. Become a Ragan Insider member to read this article and all other archived content. Sign up today Already a member? Log in here. Learn more about Ragan Insider.