Android is google baby, the first android powered smartphone was htc dream in 2008 after 2-3 years android rule all over the world specially samsung set a new value in smartphone.
Android is best operating system for smartphones. The features of android are easily operate, notification toggle, lockscreen and always latest update are coming.
Mostly 85% smartphone running on android, android powered smartphone are come in low prices to high price , budget price & expensive price. I think any operating in the present and future beat the android.