Taking screen shot in Samsung Galaxy S2 is very easy. No application needed to capture the screen.
1. Press and Hold down the HOME button and then press the POWER button immediately before launching the recent apps window.
- You should hear a sound of a screenshot being taken and you should see a text that shows it has been captured and saved.
Done !! Now navigate to /sdcard/ScreenCapture or open galary to get the captured screen.
Tested This method, Works great with ofiicial Rom ( Android 2.3+ ) and not works with Resurrection Remix ics v1.3 Rom.