I wanted a 64GB card for my Samsung Galaxy Note II.  I've learned my lesson about buying from that well-known auction site we all know, and getting fake cards there.  I've always had good experiences buying memory cards from Amazon, and always got genuine stuff.  This card was recognized by my phone right away, mounted, and formatted perfectly.  I have a ton of music on it, and some videos, and still have about 12 GB free.  I feel like I got my money's worth!