With the official update to Jelly Bean imminent, most rooted users with the Samsung Galaxy S III are pretty much already running it. Whether it be one of the leaks directly or one of the ROMs based on the leaks is inconsequential, Jelly Bean is Jelly Bean. However, there are a few features that didn’t quite make it to the Jelly Bean ROMs—one of which is Samsung’s Smart Rotation. Now there is a method to get it back.
Thankfully the method isn’t overly difficult. It will require that you know how to decompile APK files, which is easy to learn. Users will need to decompile the SecSettings.apk to get started. Then, users must navigate to smali/com/android/settings/DisplaySettings and make a few code adjustments. After that, it’s a matter of putting everything back together and pushing it back to your Galaxy S III.
The method was written up by XDA Forum Member Препод, and shouldn’t take users very long. Once done, you’ll have the Smart Rotation option in your Display settings. If you’re not up to the challenge of making the necessary changes yourself, there is also a couple of ClockwokMod flashable zips to use. They won’t work on all ROMs, but they should at least work on the stock ones.
For more details, check out the original thread._________