[JoeJohnson339]

I recently attempted to take a couple of pictures with my Samsung Galaxy S5. I have done so many times in the past, within the last 24 hours in fact. But this time when I opened the default photo gallery on the phone to view the pictures, they showed up as just a blank grey image. First, i removed the card and put it back in, then I tried to restart the phone, but it was working very slowly. I took the battery out and replaced it, and booted up the phone. Everything seemed to work fine, until I attempted to open up the photo gallery again. It took multiple attempts to get the application to open, and when I finally got it to open, all photo albums that had been stored on the card had disappeared. I looked at all my applications, and the ones that were installed on the card said "Application not Installed" when I tried to open them, as well they had grayed out logos. I opened up the file manager that comes on the phone, and the card was listed in storage devices, under the phones local storage. When I tapped on it to view the files, there were no contents on the card. I plugged the phone into my computer to see if I could access the card via the computer, but it is not listed in the storage locations on my phone. What I would like to know is, did I do something wrong? And if I did, can I restore the files that were on the card if I put it directly into the computer?

[B. Diddy]

Welcome to Android Central! The SD card could be corrupt, defective, or counterfeit. Install SD Insight to see if the card is genuine or counterfeit. Counterfeit cards are programmed to report more storage than they actually have, and if you try saving more than the card can actually hold, then files can start getting corrupt.

If it's a valid card, then go to Settings>Storage, Unmount the card, remove it, and insert it into your computer. Can the computer read these files? Backup as much as you can right now, then run chkdsk to look for bad sectors: http://forums.androidcentral.com/amb...d-sd-card.html

Remember, SD cards don't last forever -- they have a finite lifespan, and can also fail without warning (either due to normal wear and tear or a defect). Don't rely on them to be your only storage for important data.