THE SAMSUNG GALAXY S II runs on the Android operating system, so it’s vulnerable to the same kinds of problems that can occur in any computer operating system. Like any electronic device, the Galaxy S II can be temperamental at times. This appendix gives you the steps to follow when your phone is having…issues.
NO COMPUTER OR PHONE is ever perfect; neither is any operating system. So phone makers and software companies constantly track down and fix bugs. They then send those fixes to you via software updates delivered wirelessly—called over the air (OTA) updates.
So if you have a bug or other nagging problem with your phone, there may already be a fix for it, via one of these updates. You shouldn’t have to do anything to install these updates, because they’re delivered to you automatically. On the off chance that you didn’t get your update, you can check and download it manually:
From the Home screen or a pane, press the Menu key, and then select Settings→“Software update.”
If an update is available, the Galaxy S II will tell you. Tap the Download button to download the update right then, or tap Later to hold off for now. You can also tell the phone to check manually, by tapping “Check for updates.”
When you tap Download, the update starts to download. You can continue using the Galaxy S II while it downloads. ...