fish1050
Headphoneus Supremus
They can't really tell if it's fake. They can tell if it doesn't have correctly working flash memory at the locations it tries to write, or enough of it. Two of the 3 cards passed FakeFlashTest. However, it doesn't write to every byte on the card. The cards should fail H2testw (which writes to every byte) because they fail actual file writes to the entire card. There are no visible signs that the cards are fake. They aren't remarked smaller cards. Everything looks correct. It seems they're just defective.
I have been trying to do my homework on this and I have read several websites. I really think the problem is getting so bad that Sandisk and the other manufacturers should start thinking about selling direct to customers. This seems to be the only way to guarantee you won't get a fake card. At least then if a card doesn't work you know it is defective.
I can get 128GB cards locally for about $70.00 vs $59.00 on amazon.ca and 200GB for $110.00 to $120.00 vs around $100.00 on amazon.ca. So there is certainly a premium to buying locally but given how important a purchase it is I think it is worthwhile. Still not a guarantee you won't get a fake but getting a resolution will be much easier.