Samsung was able to sell around one million devices of Z1, a Tizen powered phone announced 6 months ago. Tizen is a open source mobile operating system made by Samsung.
From a news article published in indiatimes:
Samsung Electronics Co has sold 1 million Z1 smartphones that run on its Tizen operating system in less than six months of launch in India and plans to follow up with a Gold variant of the device next month and more models with its own OS at affordable prices this year.The South Korean company took years to develop the operating system and introduced it with the Z1 in India in mid-January. Samsung said Z1's growth in the competitive Indian market was on target and the new variant w ..