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SanDisk 256GB Ultra MicroSDXC UHS-I Memory Card with Adapter -...
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Customer reviews
- SanDisk 256GB Ultra MicroSDXC UHS-I Memory Card with Adapter -...
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- Customer reviews
Top positive review
Worked perfectly in my testing and in my tablets!
December 17, 2017
I got this 128 GIG card to use with my tablets. So far it has worked perfectly in my testing. I always keep a couple of spares around for my future buys and I seem to give a lot of my SD cards away to family and friends. I picked up this 128 GIG at a great price and I just couldn’t pass it up.
I own about 100 SD cards and I always do a speed test to verify the reading and writing speeds before I install the memory. This card checked out extremely well. The fastest write speed on this card was 73.143 MB/Sec and the fastest reading speed was 93.368 MB/Sec. I have attached the graphical test data for your information. I used a USB 3.0 port with a USB 3.0 card reader for the test.
Overall, this card worked well and I rated it five stars. If I have any future issues I will update my review.
I hope my review and photo of the test data helps you.
Out of 100 plus SD cards I have purchased from Sandisk I have only had one fail. With Sandisk’s 10 year warranty they replaced it and sent me a new one at no charge. That is the advantage when you purchase high tech from a top company that stands behind their product.
I simply called them and returned the old chip and they sent me a new one.
I am amazed at how well these work and how low the price has gotten on a sale day. Putting one of these into your phone or tablet is a wonderful upgrade to the device’s storage capability.
Almost no one needs a 128 GIG chip but at sales prices you can’t pass up getting them.
This is a great product and it makes your smart devices even more powerful.
This is a simple and easy upgrade for your smart devices.
I own about 100 SD cards and I always do a speed test to verify the reading and writing speeds before I install the memory. This card checked out extremely well. The fastest write speed on this card was 73.143 MB/Sec and the fastest reading speed was 93.368 MB/Sec. I have attached the graphical test data for your information. I used a USB 3.0 port with a USB 3.0 card reader for the test.
Overall, this card worked well and I rated it five stars. If I have any future issues I will update my review.
I hope my review and photo of the test data helps you.
Out of 100 plus SD cards I have purchased from Sandisk I have only had one fail. With Sandisk’s 10 year warranty they replaced it and sent me a new one at no charge. That is the advantage when you purchase high tech from a top company that stands behind their product.
I simply called them and returned the old chip and they sent me a new one.
I am amazed at how well these work and how low the price has gotten on a sale day. Putting one of these into your phone or tablet is a wonderful upgrade to the device’s storage capability.
Almost no one needs a 128 GIG chip but at sales prices you can’t pass up getting them.
This is a great product and it makes your smart devices even more powerful.
This is a simple and easy upgrade for your smart devices.
442 people found this helpful
Top critical review
Got a fake...
July 11, 2018
I ordered this based on the speeds that it's capable of, the reputation of SanDisk, and the general rating on Amazon for this product.
As I usually do with my flash storage purchases, I tested the card using h2testw and a few other softwares to confirm the card's authenticity. Unfortunately, it failed all the tests!! Lots of corrupt sectors and total usable space was approx. 7gb, when it was meant to be close to 256gb.
So I guess I was unfortunate enough to have gotten a fake card... Something I was hoping to avoid by buying through Amazon.
My advice to buyers: test the card when you get it to confirm. Search for the plethora of free softwares available to do this online. It might take you a while to fully test it out (as was tt he case for me) but it may save you from using a dud.
The only good thing, in my case, was that Amazon was quick to acknowledge my problems, so got a full refund after returning the product.
As I usually do with my flash storage purchases, I tested the card using h2testw and a few other softwares to confirm the card's authenticity. Unfortunately, it failed all the tests!! Lots of corrupt sectors and total usable space was approx. 7gb, when it was meant to be close to 256gb.
So I guess I was unfortunate enough to have gotten a fake card... Something I was hoping to avoid by buying through Amazon.
My advice to buyers: test the card when you get it to confirm. Search for the plethora of free softwares available to do this online. It might take you a while to fully test it out (as was tt he case for me) but it may save you from using a dud.
The only good thing, in my case, was that Amazon was quick to acknowledge my problems, so got a full refund after returning the product.
565 people found this helpful
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Showing 1-10 of 13,193 reviews
July 11, 2018
I ordered this based on the speeds that it's capable of, the reputation of SanDisk, and the general rating on Amazon for this product.
As I usually do with my flash storage purchases, I tested the card using h2testw and a few other softwares to confirm the card's authenticity. Unfortunately, it failed all the tests!! Lots of corrupt sectors and total usable space was approx. 7gb, when it was meant to be close to 256gb.
So I guess I was unfortunate enough to have gotten a fake card... Something I was hoping to avoid by buying through Amazon.
My advice to buyers: test the card when you get it to confirm. Search for the plethora of free softwares available to do this online. It might take you a while to fully test it out (as was tt he case for me) but it may save you from using a dud.
The only good thing, in my case, was that Amazon was quick to acknowledge my problems, so got a full refund after returning the product.
As I usually do with my flash storage purchases, I tested the card using h2testw and a few other softwares to confirm the card's authenticity. Unfortunately, it failed all the tests!! Lots of corrupt sectors and total usable space was approx. 7gb, when it was meant to be close to 256gb.
So I guess I was unfortunate enough to have gotten a fake card... Something I was hoping to avoid by buying through Amazon.
My advice to buyers: test the card when you get it to confirm. Search for the plethora of free softwares available to do this online. It might take you a while to fully test it out (as was tt he case for me) but it may save you from using a dud.
The only good thing, in my case, was that Amazon was quick to acknowledge my problems, so got a full refund after returning the product.
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!
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!
August 13, 2018
this product is not what is advertised. it ended up being a 2gb card sold as 128GB be careful, do not buy.
April 13, 2018
Bought two. Both averaged 14MB/s and would burst to about 20MB/s. Nowhere near the 98MB/S claimed. Tried to return same day received (after working with them for 90 minutes, and amazon wouldn't stating "This item note qualified for return."
April 10, 2018
Card dead on arrival. Immediate write errors and card cannot be formated. This is my first time ever having issues with an AD card.
March 28, 2018
I always use SanDisk and think they are top-notch. However, beware of fakes! I got an obvious fake microSD card, and the retail package had obviously been opened before I received it.
December 17, 2017
I got this 128 GIG card to use with my tablets. So far it has worked perfectly in my testing. I always keep a couple of spares around for my future buys and I seem to give a lot of my SD cards away to family and friends. I picked up this 128 GIG at a great price and I just couldn’t pass it up.
I own about 100 SD cards and I always do a speed test to verify the reading and writing speeds before I install the memory. This card checked out extremely well. The fastest write speed on this card was 73.143 MB/Sec and the fastest reading speed was 93.368 MB/Sec. I have attached the graphical test data for your information. I used a USB 3.0 port with a USB 3.0 card reader for the test.
Overall, this card worked well and I rated it five stars. If I have any future issues I will update my review.
I hope my review and photo of the test data helps you.
Out of 100 plus SD cards I have purchased from Sandisk I have only had one fail. With Sandisk’s 10 year warranty they replaced it and sent me a new one at no charge. That is the advantage when you purchase high tech from a top company that stands behind their product.
I simply called them and returned the old chip and they sent me a new one.
I am amazed at how well these work and how low the price has gotten on a sale day. Putting one of these into your phone or tablet is a wonderful upgrade to the device’s storage capability.
Almost no one needs a 128 GIG chip but at sales prices you can’t pass up getting them.
This is a great product and it makes your smart devices even more powerful.
This is a simple and easy upgrade for your smart devices.
I own about 100 SD cards and I always do a speed test to verify the reading and writing speeds before I install the memory. This card checked out extremely well. The fastest write speed on this card was 73.143 MB/Sec and the fastest reading speed was 93.368 MB/Sec. I have attached the graphical test data for your information. I used a USB 3.0 port with a USB 3.0 card reader for the test.
Overall, this card worked well and I rated it five stars. If I have any future issues I will update my review.
I hope my review and photo of the test data helps you.
Out of 100 plus SD cards I have purchased from Sandisk I have only had one fail. With Sandisk’s 10 year warranty they replaced it and sent me a new one at no charge. That is the advantage when you purchase high tech from a top company that stands behind their product.
I simply called them and returned the old chip and they sent me a new one.
I am amazed at how well these work and how low the price has gotten on a sale day. Putting one of these into your phone or tablet is a wonderful upgrade to the device’s storage capability.
Almost no one needs a 128 GIG chip but at sales prices you can’t pass up getting them.
This is a great product and it makes your smart devices even more powerful.
This is a simple and easy upgrade for your smart devices.
November 10, 2017
I love it! Works great in my Galaxy Note 8! Fast enough that I can throw pretty much anything at it. If you're wondering, modern Android versions (starting with Lollipop, as I recall) have the ability to read up to 1 TB of external storage. While this 400GB card is the maximum capacity you can currently buy*, the leading manufacturers are feverishly working to make larger capacity cards. For now, though, I think 400GB is enough to handle all the 4K video I can shoot.
*- Don't be fooled by unscrupulous sellers, particularly on auction sites ( I won't name it because there are a lot of fake cards here, too), who list ridiculously large capacity cards for astonishingly low prices... you don't get what you pay for! They take cheap, generic cards, usually no more than 4 or 8 GB, and rewrite the card's firmware & re-label it to make it act and appear like a larger card... 256GB, 500GB or higher! There are tons of listings out there for 1 TERABYTE microSD cards! Of course there's no such thing: and when the physical memory of the card is reached, your device will simply start overwriting data... and your precious photos, videos and other files will be gone forever. In fact, one third of all SanDisk cards on the market are counterfeit! You can avoid all this by installing and using a free app called SD Insight to determine if your card is legitimate.
*- Don't be fooled by unscrupulous sellers, particularly on auction sites ( I won't name it because there are a lot of fake cards here, too), who list ridiculously large capacity cards for astonishingly low prices... you don't get what you pay for! They take cheap, generic cards, usually no more than 4 or 8 GB, and rewrite the card's firmware & re-label it to make it act and appear like a larger card... 256GB, 500GB or higher! There are tons of listings out there for 1 TERABYTE microSD cards! Of course there's no such thing: and when the physical memory of the card is reached, your device will simply start overwriting data... and your precious photos, videos and other files will be gone forever. In fact, one third of all SanDisk cards on the market are counterfeit! You can avoid all this by installing and using a free app called SD Insight to determine if your card is legitimate.
