I purhased this thinking I was getting an amazing deal.  The price was right, the product was not.  After a few months I am unable to delete or add files, pics or music to this microsd card.  I am only using 28gb of space on it.  I cannot add anything, nor delete anything, it won't even allow me to format it and start fresh.  I am not happy with this product and extremely disappointed.  I use my phone a lot and store music and pictures on my phone for various purposes.  I would recommend buying another 64gb microsd card.  One that is more reliable.