Why are my images on my Galaxy S3 being damaged?

[AC Question]

I have several images in my gallery, that were taken with the phone that are now damaged and cannot be viewed. At first they are fine, then a few days later, they end up with a small grey square with a white outline of a person in the middle, and what looks like a lightening bolt in place in the top right area of the square, in place of the image. This has happened to hundreds of my photos. What's wrong with it??

 

[SpookDroid]

Are you storing your pictures on an SD Card? That's what happens when your pictures get corrupted/damaged. I strongly suggest you start backing up your pictures to a cloud service or your PC since either your SD Card or your internal memory is failing (depending on where your pictures were stored, but it's usually an SD Card issue).

 

[Rukbat]

It's usually a "look at how cheaply I got this huge SD card" issue, which is one of the reasons I buy only SanDisk cards. My data is worth more than my phone.

 

[Brad Steele]

It's usually a "look at how cheaply I got this huge SD card" issue, which is one of the reasons I buy only SanDisk cards. My data is worth more than my phone.

Why I buy only "SanDisk for Android" SD cards. May not be anything extra, but the "for android" eases some worries and plus I haven't had any problems so far.

:knocks on wood:

Me 2 you via Lg0gPro