Side by Side Comparison of: SanDisk vs CCM vs CZUR

got this to use in my HTC U Ultra, after the card I had from a next brand kept disappearing and coming back. which was totally screwing up my settings.I am having zero problems with this card.

SanDisk holds all my data extremely well and keeps up with my GoPro. I had some photos from a DSLR were lost once, due to another camera reformatting the SD card. SanDisk was very helpful in recovering the data. This is why I am hesitant to switch to the slightly faster Samsung SD cards. No certainty that a company with several device branches would be as attentive...

Great Micro USB card and works great for a handheld gaming system upgrade. I have always trusted San Disk and this was a great price as well. Shipping like always with Amazon was blazing fast. Very happy with this product and it has so many uses that it can be used for. High quality, awesome performance and a great price. You cannot go wrong with this item.

Bought for my Nintendo Switch. So far, so good. You'll need to update your Switch online in order to use and acknowledge this product.

Great card. Works perfectly. I use it in a Voberry® MINI 5Gbps Super Speed USB 3.0+OTG Micro SD/SDXC TF Card Reader Adapter as a backup drive for the important files on my laptop. SanDisk may be a mite more expensive than the cheap Chinese knockoffs but they work!! I have bought three cheap cards recently and none worked and I had to be refunded my money. I'm only buying SanDisk from now on!

I bought this for my Nintendo Switch and it's great. I formatted it using Nintendo's recommended formatting tool and I haven't had any issues w/ it.

On April 20th, 2011 I ordered SanDisk 32GB microSDHC Memory Card (Bulk Package). As I mentioned previously we were planning a trip overseas, I purchased this for additional photo storage for my phone. Back then a 32GB Micro SD card was a pretty huge capacity. This card served its purpose and I use it to this day. I've never had any failure or lost any data.Seller: 3rd Part MerchantCondition: NewPurchase price: $58.77 (Shipped)

I bought this to use in my android tablet and have had no issues. There is not much to say about it. It works for my purposes and if I needed to buy another one, I would not hesitate to buy this same exact one. It arrived in adequate packaging without damage. The price was very good. Overall, I would recommend this to anyone needing one without hesitation.

I have no complaints about this product. It may not be high speed but for the price it performs extremely well. It also came witH reader which according to some reviewers it did not so that was an added bonus.I have had no issues using this. It is as advertised. Anyone who has ever bought and used a memory card should know that if it's 32 MB that roughly 29 to 30 MB will be usable. That's the case with any size memory card you buy. A slight part is always unavailable.I have seen many reviews about mislabeled products but the product I received was legit. I never deal with the "other sellers" who may offer it at lower prices. Sometimes lower prices are not the best deal.

So long as this review remains at five stars, I'm satisfied.This card is in my Acer Iconia tablet Acer Iconia A1-830-1633 7.9-Inch Tablet (Silver). It was recognized just fine, and hasn't shown any issues.Of course, the price of this will keep going down as we shove more data storage into smaller spaces, so this could get outdated fast. But the brand itself seems to be doing fine, so feel free to check out a larger size, if that's what you need or what seems more reasonable, based on price.

I know there are not many Windows Phone users, and even fewer that are willing to (in some cases) void warranties to expand their device's storage space.I'm one of those customers though. The short version is this card functioned 100% fine in my Dell Venue Pro that came with an 8 GB card. If you're looking for a good 32 GB card for your Windows Phone, this may be the place to start. I can not guarantee it will be fine in your phone, but I do not see why it would not.I'm going to get more in depth, so if you do not want to know a bit of useless information, quit reading now. This is a good card, even for Windows Phone.Let's take a step back. If you don't know, Windows Phone basically pools all available memory into one space. Internal and external storage is treated in much the same way. So when you install an SD card, you can no longer get the SD card out and use it in a computer or another device.In addition, again, due to the way storage is handled, the SD cards that will function properly with Windows Phones is a bit of an unknown. The SD cards need very quick random access speed, not fast sequential speeds, which is why you can not use class ratings to determine a good card. As a matter of fact, Class 10 micro SD cards are tweaked in a way that increases sequential speed, but random speeds are reduced. This is great if you are someone that wants to transfer a lot of music or other media to a device very quickly, but not good if you want to quickly load a config file for an application you are opening. This is the same idea behind people wanting solid state drives (SSDs) in their computersAnyway, I digress. Windows Phones are very particular about which SD cards they accept due to the reasons I mentioned above. If you want a card that will perform well in a Windows Phone, this may be what you want.

I've been impressed with the Sandisk 32GB Class 2 microSDHC card so far. I bought it with bulk packaging, which means it came in a small plastic clam shell case slipped into a little plastic envelope. There were no included adapters.I'm using the card in my Android Nexus One cellphone. I've used a benchmark app on the phone to gauge performance of the card, and it is doing about 5MB/sec writes and 9MB/sec reads. This is with settings at 10MB test data size and 8KB write unit size. I saw similar write performance when the card was mounted on my PC via a USB 2.0 card adapter. These numbers indicate it's performing somewhat better than the minimum guaranteed for Class 4 cards, which is great. I'm coming from a 16GB Class 6 card and haven't noticed any performance hits, so far.

When it comes to reliability for Micro SD cards, Sandisk is the undisputed best. There is no question about that. Having used Sandisk Micro SD cards for over 7 years, I can attest to their reliability. I've used their 8, 16, 32, 64, and 200gb Micro SD cards over the years, and not one has ever failed on me. Other Micro SD cards I have bought over the years like Samsung and Kingston all have given out on me over time. Sandisk though, are honestly the best you can get when it comes to Micro SD cards. When I saw this 256gb card go on sale on Prime Day, I snagged it without a second thought. Having had it for over a week now, I'll say that this is great as always, and with 256gb worth of storage, I'll never have to worry about running out of space again. If you're in the market for a Micro SD card for your phone, camera, or any other device, look no further. This is the answer to all your problems. Besides the delayed shipping on this item (probably caused by all the shipments they had to make on Prime Day), it's absolutely perfect.

Would I must say I was a little hesitant about buying something from the warehouse with its description of its condition being very good. It was a day late and a big envelope with a smaller envelope inside containing the micro sd and adapter still in its plastic tray. When I put the card in my phone it said it was corrupt and had to format to fix it for use with my phone. Easy fix and plenty of space haven't had any issues with it. If your wanting it right away and don't care about saving a few bucks you can buy it from Walmart and spend about 5 bucks or more. If you don't care about waiting a few days and not having all that cardboard them definitely go this route.

Have had mixed experiences with other sandisk cards purchased off amazon, having one 32 gig class 10 microsd fail to read in both my phone and card readers after around 6 months, fortunately no critical data was lost. This one seems to be solid so far and if it continues to function I will be very pleased. UHS 1 seems to work well achieving nearly 80 mb/s read speeds with a usb 3.0 card reader. Seems to have no issues keeping up with the write rate of 4k videos on my action cam.

No Complaints.. Good spped.. Works great with the Nintendo Switch

Total capacity formatted with exFAT on my Note 4 is 183GB (196,585,417,216 bytes)Tested fine with both Fake Flash Test v1.1.1 and h2testw 1.4 so not fake.Read and Write seemed fine. Writing music files to it was about 15MB per second and the h2testw verify was 75+MB/sec. Other card readers may do better. Now Samsung needs to put an micro SD card slot back into their Note phones or my next phone will be something else. It is pretty hard to go back to 64 or less gb when you are used to have 120+GB worth of storage.

This card tested at 88MB/s read, so it meets its claim. The 4K speeds are fairly slow at 5MB/s and the sequential write is 15.8 MB/s which should suffice for most applications. This will work well for most people's needs.Tests done on a Kingston FCR-HS3 USB 3.0 reader using CrystalDiskMark 3.0.3 x64.Product ID on the package was SDSQUNC-128G-GN6MAUPC was 619659133795

Data loaded easily however I won't get to exercise it with my Garmin for a couple weeks. Got a reader included which was a nice surprise. Only 4 stars because it arrived a few days late.

Works like an SD card usually works. Price was what attracted me. You can never have too many sd cards. With all devices people have today like: smart phones, cameras, I pads and tablets, GoPro and many others devices like laptops....I'd recommend buying back up sd cards just like this one. It works great!

I would use a different brand if you are going to use this with any samsung phone. Samsungs and sandisk have a known issue that can't be fixed and Sandisk knows this. On the forums, there is no workaround other than replacing it with a different brand.Samsungs randomly unmount the card and flaim there's no memory card in its slot, yet you can clearly see the contents when you insert it into a pc or mac

Works like it should. I just left a negative review for SanDisks 64gb microSD but this one worked flawlessly from the time it was unpacked and it is still going strong. I don't have any of the Techie Stats that the pro users like to give..suffice it to say it works, No hassles and is what I expect from SanDisk

I have a phone with terrible storage. 1gb of ram is what I am given to store pictures, movies, apps, and documents. To keep a long story short, I had about 10 apps on my phone, 200 pictures, and several downloaded documents on my phone. The storage was so bad that I couldn't receive text messages without deleting pictures of my favorite memories- that is, until yesterday when this techno gem came in the mail! My sd card came nicely sealed and packaged and arrive on time. I put it into my phone, moved the apps, pictures, and docs to my sd card and voila- I can text and call people without my phone threatening me to delete a few of my favorite pictures. I have since downloaded about 2 movies and I have a solid 5.5gb of storage left. The only con I have is that the card came with 7.3gb instead of 8 which is a bummer, but considering the price of this card- 7 gb is a STEAL!

The card I ordered was the 32GB card from seller McTechy. The shipment had a tracking code that didn't work, but I received my package on time. The card works thus far perfectly fine and appears to be a genuine SanDisk memory card, which arrived in a package slip instead of any form of retail packaging. Popping it into my phone, it worked right away and I use it for my music, I've had no issues as of yet with it. My only complaint is that it is a 32 GB card, right? Well, my phone as well as Windows read it to be a 29.89GB card. A 2GB difference from the written value, though to me this isn't a huge issue, I've yet to need more than 30GB of my music so I think I'm fine. Still, buyers take note that (and I know storebought cards can vary by a GB or more sometimes) SD Cards aren't always the value that they are labeled as.

Adapter doesn't seem to workSo far as I can tell, the card itself works fine. When I plug my dash cam into my work computer, I can scan through what I've recorded. Today I tried using the adapter that comes with it (Win 10, 64bit, laptop, with an integrated slot for that fits the adapter) and...nothing. It didn't even notice the card was inserted. The drive didn't pop up, no light flash, it didn't even make any noises. I tried moving the switch to different positions, disabling/enabling, deleting/reinstalling, updating the driver, none of that made a difference. Just for the sake of troubleshooting, I'll try it at work (Vista box), but I'm not sure what that will prove, one way or the other, I'd still like to be to use it at home with out having to bring my dashcam in from my car to use as a card reader.

I bought two of these: one for my Android phone, and one for my Kindle. The one in my Kindle has worked perfectly since day one.Pretty sure the other one has something wrong with it. While it is functional, it has *always* loaded extremely slowly in any device I've put it in (because at first I was worried it was my phone). For example, when I first boot my phone up after it dies, it will take almost 10 minutes before anything on this card becomes accessible. Minimum. Sometimes it could take twice that. This isn't usually super annoying, but it is occasionally infuriating.If I format it, and try to use it in my Kindle...same thing. So I think the card is perhaps a bit defective.So one card worked great, the other one is...problematic but functional. It wasn't worth the time to return it though, as I was headed out of town for an extended business trip and needed it right then.

This was a great addition to my Galaxy S7 Edge for taking on vacation. I took photos and videos for over two weeks, and never had to change out for a new card. After a few months, I kept thinking I was forgetful as I couldn't find photos that I had taken. The problem got worse, so I made sure to back up what I had left. I put the card back in my phone and all seemed well. However, every now and then, I noticed that my photos all went to the internal memory and not the SD card. Eventually my phone declared the card to be corrupted. Although it is nice to have such a big SD card, it is also a situation of too many eggs in one basket. I contacted SanDisk & sent them a phone snapshot of the corrupted message. They promptly sent me a return label. In a couple of weeks, they sent me a new card. But now, I'm hesitant to rely on such a big card.

I use a MAC computer and was trying to view a video from the card that I took on my new camera. When I put it in the MAC it could not read the card. It was formatted as FAT32 and I could view it on a pc but not my MAC. After searching around I discovered that 64GB and larger have some sort of different formatting that a MAC cant read. So I had to put it back in the pc and format it again to FAT32 and then my MAC could see it. The only problem is now the disk says it only has 1GB space. I then had to use the MAC to format it to EXFAT and now it is 64GB and everything works. Not sure why they do that but it is a pain.

When I went to use this micro card, there were 21 files already on it, most with MILLIONS of KBs already recorded on it, mostly just blank white or black nothingness, one music file on it, so I guess it was used prior....everyone that saw it was shocked.Works great but I'm wondering why they would send out one that had stuff already recorded on it.

This item came with the purchase a dual dashcam PYLE USA, the sandisk works great, but the dashcam does not work properly and the one page translated instructions are worthless. It was professionally installed and the cameras sometimes turns on and I have to reset. There online PYLEUSA.COM is a copy of non-instructional instructions. Consumers be awear.

Worked for 1 and a half year before becoming completely unreadable/unrecognizable in any device, I have tried everything to revive it, for that one year it worked rather reliably, although it wrote many many gigabytes per day, it was heavily used in an Dashboard Camera that was constantly running.

Works great, however it does come with bloatware, which I did not like. I didn't notice right away, excited to pop it into my tablet and use it. Later on I saw I had apps pop up from it. Make sure to clear the junk before you use it.Overall it functions fine, no other issues.

I bought this for my galaxy note4 and sometimes the pictures don't save to it. not too big of a deal but when you look for pictures all you see is black. be aware if you really need files or pictures because they might not save or can corrupt easily.

I've purchased several of these microsd cards to use in a couple mp3 players (all Sandisk products). I used this recent purchase for about a week when it suddenly went completely haywire and I lost all 20gb of audiobooks I had stored on the card... arrrgh. My story has a semi-happy ending, though. The people at Sandisk have awesome customer service -- a 20 minute chat session with one of their customer service reps had a replacement card being mailed to me at no charge. Yes, I still lost my audiobooks, and I was stupid enough to have deleted them off the computer, so have no backup of any of them. However, I am still mostly satisfied with my experience... and now know that, while this is an excellent memory expansion solution, I need to hang on to my backups until I've listened to them.

DOA. Not much else to say, although the story is somewhat amusing. After bothering the same technical support representative at Samsung three different times, I was starting to think that my Galaxy Player 4.2 was defective. None of my MP3's would play properly, and on the off chance they would, as soon as I added more songs to the card, it would dysfunction. This would also affect media files on the device itself. Shame on me for not thinking of it sooner. Removed the SD card entirely, popped the 2Gb card from my cell phone in, and joy.No packaging on it, although I guess that's why the description says, "bulk." Pretty disappointed that I dropped $17 down the drain, but sometimes you bite the bullet.The technology that goes into these cards is pretty solid, but you can't win every time when things come off an assembly line.

I checked this out and it says it has 29.71 total storage on it. Does look like it has a serial # on it but can't read that small. Not sure why someone would bother to fake a 29 GB as a 32GB but it works all the same for my tablet and for the price I can't complain. That saying all I do is audio books, very simple games and a bit of music. I am as far from a techie as you can get so I have NO idea about speeds and such but I do know you have to make sure that the device can handle such a big card. I wanted to use it for my camera (for photos) but it can't handle such a large card.

Has some performance issues and seems to stutter a bit on video playback. I did not encounter this with my other micro SD cards which are also class 10. It's good enough for storage, but if you're looking for sustained performance (i.e. continuous recording of hd video), you might run into some intermittent issues. Originally bought this for a dashcam, but because of performance issues, ended up just as extended storage for my phone. It did cause the phone to reboot a few times. Verified this by replacing with a known good sdcard and no reboots. After scanning and repairing on this card, the reboots aren't seen often, but once in a blue moon, the system stalls and reboots still.

It either works, or it doesn't work. I've bought these in the past for everything from cell phones, to tablets, to digital cameras.Being a person who is not really a "techie", I can't comment on things like speed.This time, I opened the package and it did not work.Speaking of package.....this package is terrible. You could injure yourself trying to cut it open.

Purchased 3 over the course of 2016, two of them were DOA. Sandisk was outright hostile about replacing them... I should have contacted Amazon, their customer service is usually outstanding, but I've also heard they'll cancel your accounts after a certain number of returns, so I just had my office replace them for me ;) Can't recommend with a 66% failure rate in my purchase hx.

I'm not exactly sure whats wrong, but file transfers to this card start slowing down, or just flat out fail as they go on for long periods of time.This isn't because the card is filled up, this happens when I am just trying to put 4GB of music files onto an empty 64GB card! It will start the transfer at a solid speeds, but after a minute will slow down to 4mb/s.At first I thought this was just my phone, but now that Ive tried it in multiple Micro SD adapters, and USB card readers I have to blame the card.

The memory card works as good as any other without issue, but be very careful on handling it, the reader I had the micro SD card in was a bit too snug, and I had to put additional pressure on it using my fingernail to try to pull the card out and the card snapped in half. Thankfully i didn't lose any important data on it, but just for FYI... be very careful on how you handle this one. Personally I'd advise using the Samsung micro SD cards... they work just as fast and great, with noticeably better build quality.

i bought this for my Samsung Note in September 2015. it worked very well until March 4 2016 when it became unreadable in the middle of the day. All data appears to be lost ( went two months without backup oops). Both phone and computer say blank sd card. phone says cannot mount, Computer cannot recognize it or force format.Not sure if it is from a new update or what but it is completely unrecognizable on devices.I thought it should last more than 5 months.

Bought this card for my Roku 3. Just arrived 30 minutes ago and I popped it in right away. After installing it I reconnected my HDMI cable and then my power cable. The Roku 3 booted up but never saw the SD card installed. I tried taking it out and using compressed air to clear the port before inserting it again. Still nothing. Considering this was purchased for the sole purpose of being used with my Roku 3, it stinks.

I bought this microsd card because I was expanding my storage on my Galaxy S5. However, after I put a lot of music files on it, it stopped working. I'm not sure how but for some reason, things could get moved onto the card but taking things off was not allowed. And recently I was able to save my files off of it but I now I can't put things back on. I tried to reformat it but it still won't work. Definitely be aware that this microsd card does not have a long life for your files.

For me, this did not work hardly at all. I don't know if it was just my phone/a mismatch in equipment, but it would work for a day or two, then anything stored on it would become unavailable on my phone, and I would need to power off, take the phone battery out, remove and reinsert this memory card, and then wait for my phone to reload everything. I purchased a samsung memory card, and have not had to touch it since. Use caution when buying this. I had higher hopes for a SanDisk Product

Ordered an 8GB card with standard packaging to make sure I got a retail (genuine) card. Received card in a zip lock baggie instead. If that's standard packaging, then I wonder if frustration-free packaging is a zip lock baggie that's not been zipped closed?!The card passed a single-pass test with Check Flash, so I'm going to put it to use. Hopefully it'll last longer than the 3 months other reviewers have gotten out of theirs.UPDATE: Did not last longer than 3 months. In fact, lasted 3 weeks. Now unable to use card. It reports as being 31MB in Windows, and I'm unable to access in any way (read, write, format). This card has been used for about 20-30 hours total, in 5-6 hour segments.I doubt this was indeed a genuine Sandisk card. Should have given it 1 star.

This was very badly packaged. The case which was holding the SD card arrived damaged. Fortunately, the card itself seems to still work good after test. It also appear to not be a fake, and a real SDHC card (tested with "h2testw_1.4" without error).Also, photos of the listing shows retail packaging, when what I received was just the card inside a plastic case, in a plastic bag. There was also a white "R" painted at the back of the card (may be R for refurbished ?). This didn't looked new at all in my opinion.

I received the card very quickly, and I was instantly satisfied! Great deal for a great product. But here we are a month later, and the problems start.Just tried to load a new app on the SD card, and it said that my SD was out of space, and to clear some space and then try again. It's only been a month. I know I haven't put THAT much stuff on here yet. Went to manage my SD card, and it showed I had 18gb of space. Ok, that's odd. Tried unmounting it and remounting it. Even just pulling the card out and trying again. Nothing. Still won't allow me to install new apps of move existing apps to the SD card. I would rule out the phone, as it happened right at 14gb of data, and it obviously still let me put 14 gb of data on there. I'll test it with my computer when I get home, but with all these bad reviews on here, it better end up working (or I better get one that works), or Amazon will catch hell from me.

The SanDisk 128GB micro card arrived today. I inserted into the slot above where the SIM card goes. I get a message saying card is corrupted! I will return this immediately! I've installed SD micro cards on other phones in the past without any issues. Don't waste your time or money. A huge disappointment!! This product doesn't even deserve a one star rating!!!

DO NOT USE WITH GOPRO. bought it for my session 5. turns out this is the old version and the write speed is like 15 mbps this cannot keep up the gopro and will cause it to overheat. it also causes random pauses in the video. i've heard it can cause the gopro to crash when it overheats but i haven't expierienced that yet. instead buy the sandisk extreme or other recommended micro sd card on gopro's website. buy once cry once.

I just can't recommend this to anyone. Yes it's cheap and I guess you get what you paid for? I don't know, however, I did NOT expect it to be this slow. I only use it on my phone so I didn't really think the speed would be an issue. I was wrong. Save photos and videos on it is a pain in the ass, it takes a good 5 seconds after every picture before I can take another one. Just today I was deleting a fairly large file(2.2 gig) from it and it literally took 10 minutes just to delete it...it even said so on the prompt. You also CANNOT format this thing as internal storage because an error will come up saying it's way too slow and does not meet the speed requirements. So yeah, I can't recommend this to anyone...even for people who don't care about speed and just plan to use this on their phones because the slow read/write speeds will actually affect you.

My GoPro said "SD ERROR" and kept shutting down, so took the card out of my GoPro, and put it into SanDisk's adapter, and inserted it into my laptop to try to format it.Suddenly curls of smoke rose from my laptop's SD card port and I smelled burning plastic, so I pulled the card out, and found this. It was super hot, and there's a possibility it might have caught fire if I'd left it in the laptop for longer.The other three work fine in both the GoPro and the Laptop: they haven't melted yet, but now I'm concerned.I've attached a picture of the melted card, because "pics or it didn't happen". Well, it happened, and there's the result.

Are these knock-offs or seconds or something... I ordered 3 32Gig cards. Most Sandisk productshave been good for me, one other problem in the past. Open the first one and my DJI Phantom 3 said it needed formatted so I tried to let it format, failed. Tried formatting on a Win10 PC, failed, tried on my Macbook Pro, failed. I was afraid to even open the other two so I did a refund. Was given a return label but I HAD TO PAY to return, not that big of a deal but still that much more that I'm out for returning a bad product. Then today I get them back where they had been REFUSED?!?!?! What??? I got online and did see the refund went through but why make me pay to return only for them to refuse them? Just out of curiosity I opened the other two and sure enough they would not format either. I believe these are knock-offs or something like that. They look legit but I'm not sure... After I tried to return them I ordered another brand and they worked fine.

This worked alright to begin with - it lasted for about 3 months in my Samsung S5 phone, it's now giving me a bunch of I/O errors:[13013.698861] blk_update_request: I/O error, dev xvdj, sector 130206624[13015.057642] blk_update_request: I/O error, dev xvdj, sector 130206872[13015.057655] Buffer I/O error on dev xvdj1, logical block 16271763, async page read[13043.154555] blk_update_request: I/O error, dev xvdj, sector 131460896[13044.991772] blk_update_request: I/O error, dev xvdj, sector 131460904[13044.991800] Buffer I/O error on dev xvdj1, logical block 16428517, async page read[13046.603935] blk_update_request: I/O error, dev xvdj, sector 131469376[13047.718948] blk_update_request: I/O error, dev xvdj, sector 131469392[13048.804687] blk_update_request: I/O error, dev xvdj, sector 131469384[13048.804702] Buffer I/O error on dev xvdj1, logical block 16429577, async page readCan't return because the "return window has passed". Not happy about this.

Be VERY careful ordering this kind of card, especially when described as bulk packaging. As soon as you receive the card fill it at least above the 8gb point and preferably close to 32gb just to make sure it is not a counterfeit device. Ours were counterfeited and designed to read that there was 32gb capacity but they would not hold more than 8g! Beware! Virtually impossible to detect the difference by observing the packaging. Must actually load it with content.

Ya, after about 2 months, this card was unreadable with all of my devices. I did some research and discovered that this problem was common among this particular type/brand of microSD card. 95% of the time it doesn't even show up, and when it does it only does so for about 20 minutes, then it becomes unreadable or says that it is corrupt. Most of the music that I had on this card (the stuff I didn't have on my laptop as well) are lost now. And now my MP3 player is only usable when I have access to WiFi until I can get some money to get another.

I purchased one of these cards and thinking it was a normal SanDisk card didn't bother to try it out after it arrived. About 2 weeks later I put it in my Galaxy Tab and it couldn't read it. No big deal so I went to reformatt it. I tired to reformat the card 10+ times and nothing happened So I pulled out the card and when I did I burned my fingers on the card. I tried to reformat another SanDisk card that I had previously purchased not from Amazon with no problems. I have had over 25+ micro SD cards from SanDisk and this was my first one purchased through Amazon. Later after I read the reviews I found out and by comparing them to my other micro SD cards that these are imatations and not made my SanDisk.

I bought this card for my android smartphone. It installed great and worked just fine for about two months. All of a sudden, the phone could not read the card.Thinking this may be a fluke, I tried to reformat it (through the phone) and it would not format.Thinking maybe there was an issue with my phone, I then tried then to format the card via two different PC's, using two different readers. The disk was visible, but would still not format. I tried both conventional and disk manager methods... No luck.I contacted customer support and walked them through each method.This is where it gets good.... they told me that my card reader was broken or incompatible -- AND -- my phone was broken or incompatible -- AND -- my pc's were broken or incompatible ?????? (With these Odds I should start buying lotto tickets !! BTW all of this equipment is less than 6 months old and quite advanced)Then I tried all of the above with an equivalent Toshiba 32gb card and it worked just fine....I explained this to the agent..... I even sent screen shots .....did i get an RMA to exchange ???Nope ... just another recommendation to use a different card reader ..... arghhhhh!

Originally thought to be defective, the item I received was clearly a fake.Packaging appeared to be SanDisk, but actual memory card did not have SanDisk Logo showed in photoItem description and packaging shows 32gb microsdhc card. Actual testing by third party tools shows this card has a 2gb chip inside, wired to show 32gb.Testing results below. Multiple item reviews show this has happened many times beforeTest results -- 1.9 GByte OK (4040704 sectors)29.3 GByte DATA LOST (61460480 sectors)Details:0 KByte overwritten (0 sectors)0 KByte slightly changed (< 8 bit/sector, 0 sectors)29.3 GByte corrupted (61460480 sectors)0 KByte aliased memory (0 sectors)First error at offset: 0x000000007a6fc000Expected: 0x000000007a6fc000Found: 0x0000000000000000H2testw version 1.3Writing speed: 4.60 MByte/sReading speed: 10.0 MByte/sH2testw v1.4

I spent practically an entire day trying to transfer simple music and photo files from my computer to my cell phone. Each attempt resulted in some files not being transferred, and when they were transferred, the files were empty. The frustrating thing was that on each attempt, and there were at least a dozen, different files would not be transferred and different files would be empty. There was no consistency in the errors! As a test, I then transferred the same files to my internal phone storage and they transferred perfectly. I am a retired a computer software engineer and was completely frustrated with this project that should have been a simple operation. The SD card was a class 4 and it should have worked flawlessly in my cell phone.