I been saving images on memory card.. well as of lately some images have a icon with a lightening bolt on it..and images are lost
There is a problem with the SD card. Reboot your phone and see if the problem comes back. If the problem comes back un-mount and remove the card and see if a computer can read the card. If the computer can read it then move all the photos to the computer then reformat the card in the phone. Put the reformatted card back in the phone and take a picture. If the problem persists then the card is corrupted in some way. This is more common than you would think especially if you have a galaxy S3 and use SanDisk cards. I would try a new card from a different manufacturer.
