What are the advantages of android ?

Open-source: It means no licence, distribution and development fee.

Platform-independent: It supports windows, mac and linux platforms.

Supports various technologies: It supports camera, bluetooth, wifi, speech, EDGE etc. technologies.

Highly optimized Virtual Machine: Android uses highly optimized virtual machine for mobile devices, called DVM (Dalvik Virtual Machine).

 It is simple and powerful SDK.
 Licensing, Distribution or Development fee is not required.
 Easy to Import third party Java library.
 Supporting platforms are – Linux, Mac Os, Windows.
 Innovative products like the location-aware services, location of a nearby convenience store  etc., are some of  the additive facilities in Android. Components can be reused and replaced by  the application framework. 
 Optimized DVM for mobile devices.
 SQLite enables to store the data in a structured manner.
 Supports GSM telephone and Bluetooth, WiFi, 3G and EDGE technologies.
 The development is a combination of a device emulator, debugging tools, memory profiling and  plug-in for  Eclipse IDE.
 The customer will be benefited from wide range of mobile applications to choose.