From the launch of their Communicator model in 1996 until 2011 Nokia was dominant in the smartphone market, though has more recently been joined by other competitors in the market. Based on a report by Strategy Analytics, Samsung overtook Nokia in smartphone shipments with an estimated 27.8 million units shipped in Q3 2011[79] (Samsung does not publicly disclose the numbers of their smartphone shipments and sales). Apple surpassed Nokia worldwide by revenue and profit for the first time in Q2 2011, with Apple's profit share of the total worldwide smartphone market increasing to 66.3% while Nokia reported a loss.[80] Between Q2 2010 and Q2 2011 Nokia's worldwide Symbian smartphone sales dropped significantly from 38.1% to 15.2%, while Samsung smartphone sales increased significantly worldwide from 5% to 17.5%.[81] As of Q1 2011, Nokia had already announced plans to switch to Windows Phone. Samsung smartphones use a diverse portfolio of operating systems, including their own Bada operating system along with Android and Windows Mobile.[82] Market share among smartphone manufacturers does not equate to OS market share since some OSes are available only to one manufacturer and others are licensed across multiple manufacturers. Apple's iPhone, Nokia's Symbian, and RIM's BlackBerry smartphones are currently only available from single manufacturers. Google's Andr id OS and Microsoft's mobile OSes are platforms that are licensed and used by a variety of manufacturers. As a result, manufacturers of smartphones using licensed OSes all split the total market share of that OS between them, while the total share for a single-manufacturer OS is held by that manufacturer alone. Nokia's Symbian OS was previously available from several manufacturers under a licensed model, then later predominantly only by Nokia itself. In Q1 2012, after 14 years in the market, Samsung surpassed Nokia in units sold. Samsung also taking pole position in smartphones with 44.5 million smartphones sold or 30.6% market share, while 35.1 million iPhones sold or 24.1% market share.[83] Currently the vast majority of smartphones are manufactured in China, Taiwan and Mexico, for companies based in the U.S. (Apple, HP, Motorola), South Korea (LG, Samsung), Canada (RIM), Finland (Nokia), Taiwan (HTC) and the U.K. (Sony Ericsson). LG Corporation (Korean: LG ) is a South Korean chaebol (conglomerate). It is the second-largest company of its kind in South Korea, following Samsung, and its headquarters are situated in the LG Twin Towers building in Yeouido-dong, Yeongdeungpo-gu, Seoul.[2] LG makes electronics, chemicals, and telecom products and operates subsidiaries such as LG Electronics, Zenith, LG Display, LG Telecom and LG Chem in over 80 countries.