Today in Tech: Meet Amazon’s holiday helpers by JP Mangalindan @FortuneMagazine December 20, 2011, 9:21 AM EDT E-mail Tweet Facebook Google Plus Linkedin Share icons Fortune’s curated selection of tech stories from the last 24 hours. Sign up to get the round-up delivered to you each and every day. * It’s official: AT&T T will not acquire T-Mobile. The country’s largest wireless carrier nixed the deal after the FCC and Department of Justice’s attempts to block it. “The AT&T and T-Mobile USA combination would have offered an interim solution to this spectrum shortage,” AT&T CEO Randall Stephenson said in a statement. “In the absence of such steps, customers will be harmed and needed investment will be stifled.” (CNNMoney) The Sprint Evo 4G is one of several HTC Android smartphones affected by a federal agency ruling that goes into effect this April. * The U.S. International Trade commission ruled that the software in several HTC Android smartphones, like the Sprint Evo 4G and Verizon Droid Incredible, violated a provision of an Apple AAPL patent. As a result, the importation and sale of them within the U.S. is prohibited. The catch? That import ban doesn’t go into effect until April 2012. (Fortune and The Verge) * Meet “workampers,” a kind of contemporary migrant worker that temporarily helps out companies like Amazon AMZN as the e-commerce giant preps for the holidays. (The Wall Street Journal) * Venture capitalist Marc Andreessen offers his 2012 predictions, including the beginning of the end of feature phones in the developing world, and warns that retail stores should really feel the economic pressure from e-commerce in the months ahead. (CNET) * The final wave of Facebook employees moved into the social network’s new Menlo Park headquarters. Also: Why we add and remove Facebook friends. (Facebook and Social Media Intelligence) * A look at Louis C.K.’s recent, successful effort to bypass the middleman and offer $5 video downloads of his comedy show, “Louis C.K.: Live at the Beacon Theater,” on his Web site. The comedian expects at least 200,000 downloads, translating to $1 million in sales and $750,000 in profits. (The New York Times) Don’t miss the latest tech news. Sign up now to get Today in Tech emailed every morning.