It may happen to capture the perfect picture upside-down. We provided a couple of tips and tricks for novice users on Apple gadgets, for not letting a minor detail ruin the picture. Everything that the user needs is an Apple device running iOS5 or later for following the procedures.
- First tap on the photo that want to rotate from the Photos App
- Afterwards, click on Edit from the upper right corner
- For rotating the picture 90° counterclockwise merely tap the arrow icon from the lower left corner
- Save is the last procedure that needs to be followed, the yellow button from the upper right corner.

If not satisfied with the results, the user may very well restore the original image by tapping Cancel or Revert to Original. Also, one tap on the arrow icon would rotate the image so if you need to flip the photo around completely, just tap it two times.
Source: OS X Daily