Reason for files getting corrupted

[DisUsrNameIsAlrdyTkn]

Hello,
on my grampa's phone there are some images that have been corrupted and he wants to know what can he do about it. So I'm writing here. I don't know if anyone of you can detect the cause but I have uploaded one of the images that are corrupted. We don't know of any action that has been done with these images, we never before connected his phone to any computer or other device, it just seems like it got corrupted "over night". Sorry if this is dumb to ask of but I need something I'd tell him about it.

The phone is galaxy J3 and the files were on micro sd.

File on google drive

Thanks for possible answers.

 

[DisUsrNameIsAlrdyTkn]

Update:
tried "file repair 2.1" not working
the image miniatures are all alright, idk how to access those tho

 

[shahbaz200]

Update:
tried "file repair 2.1" not working
the image miniatures are all alright, idk how to access those tho

For image thumbnails enable hidden files in file manager on the phone go to Internal storage -> DCIM -> .thumbnails
that should give you miniatures.

 

[mundial]

Your files appear corrupt most probably because of the storage media on your phone.

Most phones use NAND memory. This is the same sort of memory found in pen drives and SSDs. With NAND, sometimes its memory cells wear-out. When this happens, the file system cannot perform its functions properly and files start going corrupt. Another possible scenario, is that the phone's NAND gets damaged by over-voltage i.e. it got a voltage spike above its threshold voltage which damaged the cells containing photos.

 

[RolandJS]

Going forward, the best way to protect folders and files you want to keep is to have "parallels" on an internal hard-drive; I copy taken photos off of my flip-phone onto the computer every so often. And, that computer hard-drive gets backed up on a routine basis.