Most Android phones and tablets have pretty good cameras, and Jelly Bean makes it easier to review all the shots you've taken on your device. From the Camera app, you can tap in the lower-right corner to see the most recent shot you've taken. You can swipe left and right to review other shots, but if you want an even quicker way to see what's on the camera roll you can pinch inward to see your shots lined up in order -- just like a film strip. Bonus: you can simply swipe up to delete any shots you don't want to keep.

Android 4.1 and 4.2 "Jelly Bean" offer an improved gallery view, which allows you to flip through your pictures like a film strip.