Are you going to treat yourself with a tablet this Halloween? You can get a free Galaxy Tab 3. Here's how. AT&T is giving free Galaxy Tab 3 to users who purchase Samsung high end smartphones: Galaxy S4, S4 Active, Note 2 and Note 3 with a two year contract. This Tab 3 will also be provided with a 2 year contract. So go to AT&T retail stores and come out with two Samsung devices. Offer exists till Jan 9, 2014.