High Quality Content by WIKIPEDIA articles! The Samsung SGH-D900, also known as the Ultra Edition 12.9 or Black Carbon, is a slider-style mobile phone created by Samsung Electronics that was announced in Q3 2006. It is marketed as the world`s thinnest slider phone. Since the end of 2006, a Wine Red edition was added and 2007 marked the introduction of a chrome edition to the lineup. There is also an upgrade of this model, the Samsung D900i which can be used to access documents on your computer from your phone and added an FM radio as well as was made out of higher-quality materials.