Android is a operating system that was developed by Google for tablets, cell phones and touchscreen devices. Android is used in software and application developers to develop mobile apps and sold through app stores like Google play store. Android users have opportunity to link their mobile device to other Google product, such as video, email, cloud storage services Because android is a Google product. To help advance open standards across mobile devices, Android source code is released in an open source format. The applications that was supported by android is more advanced and comfortable for the users. The android software supported by hardware is based on ARM architecture platform. android is an open source operating system and it is free and any one can use it.