Photos and videos (Mac only) synced from your computer’s photo application can be viewed in Photos. You can also view the photos and videos (iPhone 3GS only) you’ve taken with iPhone’s built-in camera or saved from an email or MMS message (iPhone 3GS only).
In Photos, tap a photo album.
Tap a thumbnail to see the photo or video in full screen.
Tap the full-screen photo or video to show the controls. Tap again to hide the controls.
Tap
in the center of the screen.
To replay a video, tap
at the bottom of the screen. If you don’t see
, tap the screen to show the controls.
Rotate iPhone sideways. The photo or video reorients automatically and, if it’s in landscape format, expands to fit the screen.

Double-tap where you want to zoom in. Double-tap again to zoom out. You can also pinch to zoom in or out.

Double tap the screen to scale the video to fill the screen. Double-tap again to fit the video to the screen.
Drag the photo.
Flick left or right. Or tap the screen to show the controls, then tap
or
.
