How To Take A Screenshot or Screen Capture With The LG Optimus One
To take a screenshot or screen capture with the LG Optimus One, simply:
Hold down the POWER button and the HOME button. The POWER button is found at the top of the phone and the HOME button is the second touchscreen key on the front of the phone.
The screen will flash and make the camera shutter noise. Screenshots can be accessed via the Gallery app.