There's a lot of fake micro SD cards being sold to unsuspecting customers online, especially the Samsung cards since they're usually one of the best available. These fake cards while they look virtually identical to the OEM cards are usually smaller in size such as a 8GB or 16GB actual size card which report themselves as being 128GB+ in size. Not only are they not the correct size of storage, but their read and write speeds are inferior to the OEM cards.With this ongoing problem in the market, it's made it very difficult purchasing any Micro SD cards online from retailers such as Amazon and more so Ebay. Due to this problem I have collected an assortment of software tools to inspect the authenticity of every SD card I purchase. These tools include Chip Genius, FakeFlashTest, and H2testw on the PC, along with a couple Android Apps on my Samsung Galaxy S7 Edge phone.I am happy to report, my inspections have concluded these cards being sold on Amazon are authentic Samsung cards. I even have an identical Micro SD card purchased directly from Samsung's website and all the reported data findings are identical on this card besides the serial number which is what I would hope to find.I'm going to include some screen captures from the apps I used on my Samsung Galaxy S7 Edge phone as a reference, so you should know what to expect from an authentic Samsung Micro SD card.Review Update:I recently purchased a 256GB Samsung Card from another online retailer not named Amazon, where the seller had 100% positive feedback, was an established 4 year member and the price wasn't that much of a savings over what I had seen listed on Amazon for the same item. I contacted the seller to verify the authenticity prior to purchase. All signs seemed to indicate it was a Legit Samsung card, but upon arrival I learned differently that it was a fake. I got my money back for that item, but sadly another unsuspecting victim made a purchase at the same time and left the seller a positive feedback review. That's because the fake cards to work until you lose your data because you exceed the real storage limit of the card which is typically 8GB.Now having a REAL Samsung SD Cards and a FAKE in hand, I thought I would take that opportunity to assist others the visual differences between a REAL and FAKE Samsung SD card. See added REAL vs FAKE images. The FAKE is not from Amazon.Review Update 2/28/2019I have observed some reviews where they have stated they received a fake. Hopefully, my original review assisted in identifying that it was indeed a fake. My thought on this is because although you are making your purchase on Amazon, the item is actually "Sold By" multiple vendors under the same Amazon listing. I have been asked by multiple individuals to specify who my Authentic Samsung cards were sold by. I've now made multiple purchases of Samsung EVO SD cards through Amazon. Below is a list of the sellers from whom I have received authentic Samsung SD cards from my purchases.Authentic Samsung SD card models purchased and sellers purchased through Amazon.Samsung EVO Select 128GB= Sold By: Amazon.com Services, IncSamsung EVO Select 256GB= Sold By: Amazon.com Services, IncSamsung EVO Plus 256GB= Sold By: Platinum Micro, Inc.Samsung EVO Plus 256GB= Sold By: Blizzard LLCSamsung EVO Plus 256GB= Sold By: ShopSmart DealsSamsung EVO Plus 128GB= Sold By: US EcoZoneSamsung EVO Plus 128GB= Sold by: Triplenet Pricing INC