Amazon.com: Customer reviews: SanDisk 400GB Ultra microSDXC UHS-I Memory Card with Adapter - 100MB/s, C10, U1, Full HD, A1, Micro SD Card

Top positive review

Believe the "Fake Card" Hype - Photo to Prove It

Reviewed in the United States on 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!

3,611 people found this helpful

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Barbara A Botts

Defective card

Reviewed in the United States on 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!

2,067 people found this helpful

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Drew

Slow to load content on Samsung S9 Edge

Reviewed in the United States on March 12, 2020

Capacity: 256GBVerified Purchase

I bought this for a Samsung S9 to replace a 64gb card. The last card loaded pictures from the phone very quickly as if they were stored on the device. That card was 3 years old and i was running out of space. This card while having much more capacity appears to be much slower as well. It takes a few seconds to load a picture, attach it to a text message, etc. Forget about scrolling through your picture gallery. Frustrating and not going to happen. A little disappointed in that. I assumed it would be just as fast as the 64gb card.

One person found this helpful

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Dr. Loomis

Worked great for about 4 months but now all my videos are choppy and freeze

Reviewed in the United States on June 29, 2018

Capacity: 200GBVerified Purchase

Worked great for about 4 months but now all my videos are choppy and freeze. This was the best reviewed one I could find but I knew it wouldn't last based on all the other negative reviews. Why is it so difficult to make a quality SD card? I don't understand the physics of it and probably never will, but good ones that last don't seem to exist.

4 people found this helpful

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roy

Card wasn't fast enough for photographs.

Reviewed in the United States on July 20, 2018

Capacity: 128GBVerified Purchase

Watch the speed of the cards that you're getting to ensure that they are correct for your application. This card did not work at the speed that I needed and had to be returned. I am a semi-professional photographer and wanted to use this card as a backup card in my camera, it was slow enough that I ended up replacing the card the next day after arrival so that I would be able to do my shoot as planned, lots of bursting.

There are online many speed rating sites that should be looked at to ensure you have a card that is the speed you actually need.

2 people found this helpful

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0Comment

Check the adapter !

Reviewed in the United States on November 20, 2018

Capacity: 32GBVerified Purchase

The microSD itself is nice and work well on my GoPro hero 5 in 1080p 120fps or even in 4k 30fps.
So the writing speed is correct. I'm not using my Gopro much so even after few month I didn't had to plug the card to backup, store and format it. The only times I had to edit I've don't it over wifi on my phone.
So today I tried to connect the car on my laptop using the provided adapter and... it doesn't work.
There is literally no way to make it work on my computer which have only a SD card port.
So obviously I can't return it anymore, so I have to but an adapter which basically cost the same price than the Micro SD itself...

One person found this helpful

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Thomas R. Wolf

Big problems with this being read only

Reviewed in the United States on November 12, 2018

Capacity: 256GBVerified Purchase

I was really disappointed that the default setting for this was readable only and no rewrite. This has been a massive problem for me, and changing the settings has been next to Impossible. I wanted a device that was store material and from which I could remove the material easily. This has not been possible. I don't know the reason for this, and frankly I don't want to try to figure this out. This should be something that is easy to do, but it is not. Be very careful when you buy this because you will get a non rewritable chip.

2 people found this helpful

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Minno Durkin

350 GB, NOT 400

Reviewed in the United States on October 12, 2019

Capacity: 400GBVerified Purchase

I paid for 10% of my SD card to be used up, FOR FREE! Tell me where 50gbs went from opening to placing inside my switch, because apparently they dissipated into thin air.

3 people found this helpful

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The manufacturer commented on the review below

Beverly R James

Not able to record 4k

Reviewed in the United States on January 9, 2020

Capacity: 256GBVerified Purchase

I thought this was going to work because of the specs, however it wouldn't record 4k in my Mavic Pro. I use it in my Canon EOS R, only for 1080. Anything higher won't work on those 2 devices. Wish someone would've told me exactly what devices they used this card with! Also, I used in my Rodecaster Pro and it was success recording vocals- only thing is you don't need 256gb for vocals! An hour show and I'm barely getting 1gb. 🤦🏾‍♀️

One person found this helpful

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william

Not for dash cams!

Reviewed in the United States on December 13, 2019

Capacity: 64GBVerified Purchase

If you are buying this card for a dash camera or something that is writing continuously, don't buy this card. It works well for many things, but dash cams, security cameras, etc it does not. I had this in my dash cam for a little over a month before it died and it was outside the return period. For some applications it's a good card, but if you have a dashcam,.get something like samsungs pro endurance which is made for dash cams.

One person found this helpful

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mopman411

Bought two, one failed

Reviewed in the United States on May 30, 2019

Capacity: 64GBVerified Purchase

The storage capacity for the money isn't bad. I ordered two of these cards. One is used in a Moto Z3 and the other in a Moto G7. After two weeks of use one of the cards stopped working. Pulled it from the phone and used a computer to attempt to format and restore the card. It formats but encounters errors and failures when using it for storage.

After researching the cards and Amazon, I will be switching brands and purchasing from a local store.

One person found this helpful

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The manufacturer commented on the review below

Andres Martinez

Had problems with format

Reviewed in the United States on July 30, 2020

Capacity: 256GBVerified Purchase

I had problems getting this SD card to work. When I used it for the first time, It did not work until I formatted it again. Then, I had to format it several times again before I could actually use it to store information. So far, it is still working, but I hope to not have to format it again in the future. I will update this review in a couple months to verify if it keeps working.

One person found this helpful

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SanDisk 400GB Ultra microSDXC UHS-I Memory Card with Adapter - 100MB/s, C10, U1, Full HD, A1, Micro SD Card - SDSQUAR-400G-GN6MA

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SanDisk 400GB Ultra microSDXC UHS-I Memory Card with Adapter - 100MB/s, C10, U1, Full HD, A1, Micro SD Card - SDSQUAR-400G-GN6MA

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