I bought Samsung 64GB microSD cards from two sellers from DHgate.com. After 3.7GB all my files are corrupted. Later I figured out that all 64GB microSD cards are fake: instead of 64GB all microSD cards have 3.7GB good memory. DHgate.com doesn't protect buyers from the fake product. I sent request to stop illegal support for fake items, but it never happened. DHgate.com allows so far to sell fake items.