Upgrading to the Newest Software
YOUR SAMSUNG GALAXY S II uses the Android operating system, built by Google. The Galaxy S II also includes some tweaks and changes that Samsung made to Android, so your phone’s software might look a bit different from other phones running Android.
Google regularly upgrades the Android operating system, but unlike with a computer, you won’t need to buy the upgraded software, or even download it. Instead, it comes automatically to your phone, by an over the air (OTA) upgrade. You don’t need to do anything about it; it happens automatically.
Tip
Wondering which version of Android you’re running? The Galaxy S II will be happy to tell you. From the Home screen or any pane, press the Menu key and then select Settings→“About phone.” Look at the Android version number for the version of Android you’ve got on your phone.
To check whether your phone has the latest and greatest software from Google and Samsung, from the Home screen or any pane, press the Menu key and then select Settings→“Software updates.” The phone will let you know whether your system is up to date. If an upgrade is available, the phone will ask if you want to install the new software, and then do so over the air. You can also tap “Check for updates” to see if any are available, and then install them.

Note
After Google releases a new version of Android, it takes a couple of weeks—maybe even a month ...
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