In July 2000, Google works with Android Inc.., A company located in Palo Alto, California United States. The founders of Android Inc.. working at Google, among them Andy Rubi, Rich Miner, Nick Sears, and Chris White. At that time many consider the functions of Android Inc.. just as software on mobile phones. Since then the rumors that Google is about to enter the mobile phone market. In company Google, a team led by Rubin served to develop a program of mobile devices supported by the Linux kernel. This shows an indication that Google is preparing for a competition in the mobile phone market. android latest version of version 3.0. Android also has joined with some smart mobile such as Nokia, Sony Ericsson, and others.