I can no longer add or delete files (after I add or delete it will revert to original data)

I did back-ups, but having files keep reappearing after deleting [no, it's not cloud-backup of content connectivity either], PLUS not being able to reformat are huge issues to me

Well, you can delete the files and it looks like the card is empty, but once you eject the card and put it back in the computer the old files are back

The phone says the SD file is not functioning and that it doesn't work.

Most files were lost, except a few ones here and there

Come to find out I had a corrupted file

and it started corrupting files now long longer functions in any device it is inserted to.

I use it in my action camera, has no problem saving the files

Avoid if you do not want to deal with corrupted files and read errors

So, I had to replace the SD card on the 5 session due to corrupt files

I found all my files and was able to figure out how to get rid of my corrupted file

So, when I connected it to a computer to copy my files, I found out that my files were corrupt

It usually starts with "File corrupted" errors, and within a month or so it just dies - unable to format...

No way to recover my files

When you erase files, they reappear 3 minutes later

So again, if your phone won't read your SD card due to a corrupted file, you don't have to lose everything

After 6 months of light use I started having corrupted pictures issues and other files

I had to buy another USB style adapter to get the SD card in my computer to try to recover as much of the missing files as possible

It does not work correctly, won't display files on a Mac, and the factory blog says not to use the SanDisk Ultra cards.

Good I like it

This is a lot nicer than the one I

Thank You & I'll