In Pictures: 10 ways to make Android faster, more ...
Install an Android optimizer.
Apps like Android Booster and Android Assistant give you the power to automatically kill apps that run in the background, gobbling up battery life and draining CPU. You can set a monthly data limit and monitor exactly how much data you’ve downloaded over 3G and 4G networks, and you can purge your cache, history, etc.
In Pictures: 10 ways to make Android faster, more productive and more secure than iPhone