<Li> Int'l version: 0.490 W / kg 1 g (head) 1.02 W / kg 1 g (body) 1.02 W / kg 1 g (hotspot) </Li> <Li> U.S. version: 0.55 W / kg (head) 1.49 W / kg (body) </Li> <P> The Samsung Galaxy S III (or Galaxy S3) is a multi-touch, slate - format smartphone designed, developed, and marketed by Samsung Electronics that runs the Android OS by Google . Launched in 2012, it had sold about 70 million units by 2015 . </P> <P> It has additional software features, expanded hardware, and a redesigned physique from its predecessor, the Samsung Galaxy S II . The "S III" employs an intelligent personal assistant (S Voice), eye - tracking ability, and increased storage . Although a wireless charging option was announced, it never came to fruition . However there are third party kits which add support for wireless charging . Depending on country, the 4.8 - inch (120 mm) smartphone comes with different processors and RAM capacity, and 4G LTE support . The device was launched with Android 4.0. 4 "Ice Cream Sandwich", was updated to Android 4.3 "Jelly Bean", and can be updated to Android 4.4 "KitKat" on variants with 2 GB of RAM . The phone's successor, the Samsung Galaxy S4, was announced on 14 March 2013 and was released the following month . </P>

When did the samsung galaxy s3 come out