Nokia s40 updating library
Android is a mobile operating system developed by Google, based on a modified version of the Linux kernel and other open source software and designed primarily for touchscreen mobile devices such as smartphones and tablets.
In addition, Google has further developed Android TV for televisions, Android Auto for cars, and Android Wear for wrist watches, each with a specialized user interface.
Perlman refused a stake in the company, and has stated "I did it because I believed in the thing, and I wanted to help Andy." At Google, the team led by Rubin developed a mobile device platform powered by the Linux kernel.Google marketed the platform to handset makers and carriers on the promise of providing a flexible, upgradeable system.An early prototype had a close resemblance to a Black Berry phone, with no touchscreen and a physical QWERTY keyboard, but the arrival of 2007's Apple i Phone meant that Android "had to go back to the drawing board".Google later changed its Android specification documents to state that "Touchscreens will be supported", although "the Product was designed with the presence of discrete physical buttons as an assumption, therefore a touchscreen cannot completely replace physical buttons".By 2008, both Nokia and Black Berry announced touch-based smartphones to rival the i Phone 3G, and Android's focus eventually switched to just touchscreens.