Amazon.com: Customer reviews: SanDisk 256GB Ultra MicroSDXC UHS-I Memory Card with Adapter - 100MB/s, C10, U1, Full HD, A1, Micro SD Card - SDSQUAR-256G-GN6MA
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  • SanDisk 256GB Ultra MicroSDXC UHS-I Memory Card with Adapter -...
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Customer reviews

4.6 out of 5 stars
4.6 out of 5
26,215 customer ratings
5 star
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4 star
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SanDisk 256GB Ultra MicroSDXC UHS-I Memory Card with Adapter - 100MB/s, C10, U1, Full HD, A1, Micro SD Card - SDSQUAR-256G-GN6MA

SanDisk 256GB Ultra MicroSDXC UHS-I Memory Card with Adapter - 100MB/s, C10, U1, Full HD, A1, Micro SD Card - SDSQUAR-256G-GN6MA

bySanDisk
Capacity: 256GBStyle: SingleChange
Price:$28.99+ Free shipping with Amazon Prime
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Top positive review

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Jeffrey Fahndrich
4.0 out of 5 starsBelieve the "Fake Card" Hype - Photo to Prove It
September 30, 2018
Top card doesn't work / Bottom card works. Bought the top card June 18 2018 for a Nintendo Switch and the games would download to 99% and then suddenly I'd get an error. When these cards went on sale recently I bought a new one just to see if it was the card. I could not BELIEVE how different the fonts were! Check out photo. Also the color of the bad card is off (slightly more purple and less red). Sure enough, I was able to download games to the new card without incident. The real product works great but I just can't justify giving 5 stars when I had this experience. Buyer beware!
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1,827 people found this helpful

Top critical review

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Barbara A Botts
1.0 out of 5 starsDefective card
August 13, 2018
After trying and trying repeatedly to use this microcard as a replacement in my Samsung S7 - hours of frustration, seeking guidance from internet, friends, etc. I gave up, thinking it was just my ineptitude. Tried again several times, it would never work.
Finally, decided to try a different/new card. Sure enough...worked right away! So, by now the 128 GB card ordered May 2, is well past its "return by" date, when I determine it is defective. Now what do I do? Searched on Amazon, but found no instructions for this situation.
Giving it 1 star in hopes this can be rectified. I use SanDisk cards all the time and have never had a problem like this before.

Just found out from SanDisk that this card is a fake - not their product. Guess I am screwed unless Amazon steps up and makes it
good. Need to somehow punish this seller "Lecu Computer" for giving Amazon a bad name and customers a bad product!
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1,423 people found this helpful

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Amazon Customer
5.0 out of 5 starsBig gains for older Phone
April 27, 2019
Capacity: 256GBStyle: SingleVerified Purchase
I bought this to upgrade an older Galaxy Note 3 smart phone because I tend to hold onto things that work and work well, which this phone has. A quick bit of research showed that as a 64GB supporting SDXC-compliant phone, the Note 3 should support any SDXC card up to and even surpassing 256GB. Happy to report, it does indeed.
I'm getting the full available volume of space on the card which means I've increased the originally rated "maximum supported" space of the device four-fold, and with no odd problems showing up.
The card is much faster with read/write speeds as well. I can load up a 2GB file in under a minute, whereas the older 64GB card I bought around 4 years ago took about 4-5 minutes to do the same.
As a performance booster, this card has been a good purchase.
I've used SanDisk cards for digital photography and they've always performed exceptionally well. I see no reason to believe that this card won't perform just the same.

If you have an older phone or other device that supports 64GB / SDXC cards (MicroSD or other form factor) in exFAT format, then you should quite likely be able to use an SDXC 128GB, 256GB or even 512GB card in it without issue... SDXC being able to in theory support up to 2TB in size. Not that we may ever SEE a 2TB MicroSD card, but one can dream.
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John R. Leonard
5.0 out of 5 starsVery good for the money.
April 16, 2019
Capacity: 256GBStyle: SingleVerified Purchase
I just received this package today and as soon as I did, I inserted it into my laptop, formatted it for NTFS, and then ran a full test with h2testw.exe. The total time to run the test was between 2 and three hours. The SD card passed the test 100%. The program, h2testw, filled the SD card with blocks of data and then read them back verifying each one. In this way it both verified the total capacity of the card as well as its integrity. In light of the amount I paid for this card I can only say that it is a great value. I would certainly recommend it given my experience with it so far.

Update: I will add that the measured speeds of the SD card were less than the posted speeds. They ranged from 45 MB/s to 65 MB/s. That is quite a lot less than the claimed speed. I still find the card acceptable though because a) the actual speeds are quite good as it is and b) to expect a card of this capacity and price to operate at those claimed speeds is unrealistic.
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Philip
5.0 out of 5 starsIt works for the Tesla DashCam
July 13, 2019
Capacity: 256GBStyle: SingleVerified Purchase
I used the SanDisk 32G flash drive on Tesla Model 3 for the dashcam. But it is full in a short period of time like a week or so. Then I tried out the SanDisk ultra microSDXC UHS-I 256GB with the Suntrsi TF/SD card. It works! So far that is no corruption. I think it will last for weeks before it is full. I can view the video easily on a Mac or on the iphone 6s plus. I have other set up before but they have a hard time to be viewed on iphone. This is very easy to be viewed on iphone with no problem. The microSD fits right inside the Suntrsi card. The resulting size is the same as a regular Flash drive! I bought two Suntrsi cards and two SanDisk microSD cards so I can swap it out when one is full when I am on the road.
I am happy with this set up.
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Gerald Gregones
5.0 out of 5 starsGood flash card
March 19, 2019
Capacity: 256GBStyle: SingleVerified Purchase
I got this as "expansion" memory for my wife's Lenovo chromebook. Overall it seems nice. The adapter works and the capacity shows as the proper just under full listed value. The only thing I didn't like was that on her chromebook the slot doesn't let you insert the card/adapter fully, it sticks out a little. I had intended for her to simply stick the SD card in and let it stay in the machine effectively raising the innate 64Gb of memory an additional 200+Gb, but it sticks out. It's not a huge deal she just has to carry it in the sleeve for the laptop and only insert it and put stuff on it if she needs to. A good purchase even if it wasn't EXACTLY what I had intended. Plus it's tiny so you could put it in a phone I think.
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DashBroncos
5.0 out of 5 starsPerfect for my Nintendo Switch!
December 27, 2018
Capacity: 256GBStyle: SingleVerified Purchase
I needed to expand the memory space in my Nintendo Switch because I ran out of the 32 GB that came installed in it. Breath of the Wild alone took up about 16 GB! It was pretty difficult finding a micro SD card in my area within my budget, until I finally decided to go to the internet and found the SanDisk 256 GB card on Amazon for $49.99 (I'm not sure if that price is temporary since I bought it during the holidays). Once I ordered and received it, formatting the card to work in my Switch is a cinch, only takes a minute or so, and I have plenty of memory spaces for years to come (about 185 GB free after transferring/installing 10 games, mainly Mario, and some media apps). The write speed is about average, but the read speed is fantastic, which is a huge plus for playing games! I highly recommend getting this SanDisk card for your Switch and, if you're an avid gamer like me, get at least 256 GB.
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Ian B.
5.0 out of 5 starsCompatibility is key and this is the standard!
August 4, 2019
Capacity: 256GBStyle: SingleVerified Purchase
Whenever you look at a product that uses memory cards, a compatibility guide should be the first thing you examine. At the top of every guide is a SanDisk product. There's a reason for that. I have 3 of these cards (Nintendo Switch, Samsung Note 9, Microsoft Surface Go), and they've worked flawlessly for a long time.

I'm not saying people can't have issues with SanDisk cards. Yes, I have gotten a bad card out of the package before, but it was only once, and I have bought dozens of memory cards for various needs. In that case, SanDisk support was swift and easy, getting me a replacement next day with a prepaid return label to send back the defective card. You don't get that level of support from cheap off-brands.
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ElleMphs
5.0 out of 5 starsLOTS of storage; reliable. Great value.
February 14, 2019
Capacity: 256GBStyle: SingleVerified Purchase
Very reliable brand. Using for media storage on my brother's phone for when he goes to the hospital. This replaces a laptop, which is just too large. He can't use his fingers to change channels on a traditional remote for the hospital TV, but he can use his knuckle on the virtual keys on his phone, no problem. Holding up great! Stores 800+ movies & shows plus some music! My brother is ecstatic! I'm very pleased. Would purchase again. Highly recommend!
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Wilder K. Raven
VINE VOICE
5.0 out of 5 starsLots of storage.
April 17, 2019
Capacity: 256GBStyle: SingleVerified Purchase
I'm a bit bummed because two days after I ordered the price went down significantly, but that happens in tech products so I'll not consider that as part of my review.

This worked perfectly in my GPD XD. No problems whatsoever. Lots of storage space, and it's a genuine memory card-- Not one of those spoofed fakes that lies about the capacity. Fast transfer rates if you have hardware that supports it, too.

Great value. It still blows my mind that we're at the point where 256 GIGAbytes of data can be stored on something smaller than my fingernail. That's crazy, but it's awesome. Five stars. Sandisk doesn't disappoint.
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Steve W.
5.0 out of 5 starsVery reliable card
December 20, 2017
Capacity: 256GBStyle: SingleVerified Purchase
It works in my Note 8, it stores data, it is fast enough to where I don't notice any lag, I have never had a SanDisk card fail... well at least not in the last 20 years or so, the colors on the card are extremely boring, but I can read the text so I will live with it. What can I say? It does what it supposed to do and that is all I am looking for.
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Movieskinny
5.0 out of 5 stars10 WOWs outta 10 WOWs>>>>>>>>>>
June 1, 2019
Capacity: 256GBStyle: SingleVerified Purchase
256gb is amazing. I installed this in my Samsung Galaxy Note 8.
I now have room for all of my extensive music collection, several
season of TV shows, movies, photos, and still have 150gb to spare
(counting the internal 64gb). The price for this is amazing also. Pony up the
$40 and get one. Well worth it. I've never had a SanDisk die on me.
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