There are different ways to update Android OS. You can download the patch/ROM and apply it manually but the easiest way is to use settings application. Most of the time, the OS looks for updates and throws a notification when there is an update. Also, do not miss our “Recommended Smartphones” list that contains best smartphones for every budget.
Go to Settings -> ‘About phone’.
Click on ‘System Update’.
If there is an update, you will get option to download and install and you will also get to see the change log.
