This might already be well known. But i thought i'd post a little tip about taking screen shots. Just press the main button and the 'off' button at the same time and a screen shot will be sent to your camera roll. This works in whatever mode your iphone is in, including video. So you can take a screenshot of your favourite movie. As i say this might already be old news, but it was news to me, and i'm sure there are people that might appreciate the tip. hope it helps.