Take a screenshot
You see all kinds of interesting, fun, or important stuff on your phone, like a funny text exchange with a friend or an unbelievable score in a game you just played. With Windows Phone 8, you can take a screenshot of it, save it in the Photos Hub, and share it.
Just press and hold the Start and Power buttons at the same time to capture whatever is currently on your screen. Your screenshots are automatically saved in the Screenshots album in the Photos Hub.