Help i can't read write delete on sd card
It does not read or move, delete etc from its own program or another file manager my device lg g3 marshmallow
Hi! I unfortunately don't know why this is happening to you - hopefully another user who looks at this thread will be able to assist you - but what I do recommend is to not do anything will your SD card until you either contact LG, a cellular repair shop, or get advice/input from a trusted source or user.
The card is most likely corrupt or damaged. If you're able to, backup all of the data to your computer hard drive now. Then see if you can reformat it. If it still doesn't work after reformatting, then the card is damaged, and should be discarded.
There must be something about the card that the phone doesn't like. If I were in your situation, I'd just get rid of that card (or use it only on PCs), and use a different one.