Samsung Galaxy Note II owner - card worked great out of the package without any need for formatting in my phone. Just after the 30-day return period had expired, I've started noticing the Reading SD Card icon briefly appearing when I wake my phone from sleep. Now, I'm constantly getting read errors on my phone asking me to format my card. After formatting on my computer (tried FAT32 and FAT - on my computer because it does not format on my phone with this error) and then again on my phone (to ensure a correct format), it would briefly work for about an hour and then the reading errors would recur. It's just a matter of time before complete and utter card failure. The card is a complete failure now with the constant read errors. It simply is not usable. Bought this card on sale (not much of a savings now that I have a useless chunk of plastic). Thought I'd risk it even though SanDisk's quality has been on the decline, but never again. Who would have thought that SanDisk, once a leader in flash memory, would have fallen so low. I've never had any of my Patriot cards fail as miserably as this SanDisk card. I should have suspected the poor quality control by just looking at the cheap grey and red paint job on the card. I highly recommend anyone thinking about buying this card to learn from my mistake and reconsider spending a little more to buy from a quality company.

Every tablet and phone I will ever own will include a MicroSD media slot. It is faster to move data via the SD slot from an older device to the new one. Plug it in and move on with life. No fuss, no muss. As opposed to devices that have no SD slot (only integrated memory) and require a connection to a computer or (slower) cloud storage device, which take more time to transfer and - in some cases - data corruption can occur. Just moving one expansion card is so much quicker. I bought this 64GB card on sale, which was lower than any online retailer. But even if it were not on sale, it is cheaper to spend $50~100 on this MicroSD card than it is to spend up to $200 more between phones or tablets. Many devices come with 16GB, charge $50~$100 more to get the 32GB device, and then another $100 on top of that previous charge-up for the 64GB version. Keep in mind that integrated RAM is also being used by the operating system and data it stores. So, for many practical reasons, we customers are better off with MicroSD cards that are transferable between devices. If anything, as long as one doesn't bend it or tapdance on it, it will remain viable. My only worry is cramming 64GB of space into such a small domain. Technology is incredible, but flash memory devices have limited write spans (100,000 write cycles per sector) and the space between sectors is so small that electromigration or magnetism could reduce the ability of the card to hold data. Even as a digital photographer, I know that full size SD cards can corrupt image files over time. So backups are essential, and the smaller size of MicroSD makes backing up even more important. But SanDisk is, historically, a VERY good brand. I don't expect the card I bought to fail any time soon.

I have always bought SanDisk memory cards and memory sticks and never had any issues/loss of data. This one also came with a bigger sleeve that fits into my laptop card reader - another thing to watch for if you don't already have one. The class 10 is what I was looking for and from what I read, this class 1 is more updated but can still be used for a class 10. I bought some cheap Dash Cams that required these. They also only take no larger than a 32GB Micro SD card. Evidently the file format changes when you go larger then a 32GB card which more expensive newer devices can use - not the older cheap ones so watch what you buy. With Video set to the highest on my Dash Cam, 32GB gives me 4 hour recording at best. Not a big deal as I set my device to loop recording and would only use it for proof of an accident or something I pass. At that point, I would drop the video to my laptop for saving before it gets wrote over. You need the highest setting to be able to read a license plate. FYI - the more expensive nicer Dash Cams do a whole lot more and record a better quality picture. These are my first Dash Cams so I wanted to experiment and get to know how to use them and understand all the settings before spending the money on a nice one.

I've long been a fan of Sandisk, and have faithfully used their compact flash memory cards in all my digital cameras, so imagine my surprise to have two 16 GB and two 32 GB cards fail in two different Samsung Galaxy SIII phones so far, taking all data with them. The cards cannot be accessed or formatted, either in the phone or on the computer. I've finally contacted Sandisk support, but after reading a lot of review on the web concerning this issue (and trying all the various workarounds posted), I'm not confident that Sandisk will be able to help me. There frankly should be NO WAY for an SD interface to make a card unusable, short of physically destroying it with overvoltage, period. I'm an embedded systems engineer (30+ years experience) and there is NO EXCUSE for Sandisk cards failing like this, unless the phone is doing something evil electrically to them. Please beware, and back up your files often, because it WILL FAIL eventually.

when I found bestbuy had a sale on this product I jumped on it. fortunately I purchased two of them. I knew I wanted to use one to save my videos and pictures since I am trying to clean up my pc and also migrate the information over to an external drive. my perspective was to be able to have the files to provide to family members so they could load the items they wanted onto their phones then pass to the next family member. I don't necessarily like to have people sending a million pictures since that can impact your phone if your card isn't high enough. the card held all the pics and vids I had with room to spare. the second card I placed into my new phone which came with 16g but I figured why not just give it a go with the 32 and use the 16 for something else. I love that I can save a great deal of high capacity files/info on such a small device. its doing wonders for my spring cleaning and computer consolidation efforts (I also purchased a external hard drive to assist with these efforts). I suggest purchasing this product - when its on sale and best buy usually has a sale during the holidays/special days. don't be surprised if its on one of the deal of the day values or upcoming mothers day!

I bought this product based on the SanDisk name and reputation, and this card had enough room to store a lot of media on it. For the price I thought it was a good deal. I filled it with music and used it to store my photos. Within a few months it started giving me errors (card could not be read). It would hiccup now and then but was still functional so I still used it but transferred the pictures to my PC and started saving them to my phone. Good thing I did: a few weeks later it was dead -- not capable of being read by any device. I didn't care about losing the music; it's backed up in two places. Losing the pictures would have been catastrophic. But that's not the point. This card simply did not deliver. I've had non-brand-name microSD cards last longer than this including the one in my phone now. Never again will I buy another SanDisk product.

Just bought this card last night at the Federal Way store and installed it right there in the cell phone section with an associate standing there with me. We both confirmed it was in and showing it was recognized by the phone. BUT, now this morning I went to remove it to load my mp3 songs onto it but it would not come out! The card was hitting the silver front part of the phone body! I tried prying it out with a jeweler's screwdriver but it still would not slide out! Next, I had to remove the 6 screws from the back of the phone, pry the back up a little, use one screwdriver to hold it open and a second one to pry the card out. It eventually came out... CRACKED IN HALF! I do NOT suggest you install this card in Verizon's LG Optimus Zone phone! Or if you do, make sure you load your music onto it FIRST or plan to never remove it. Otherwise, it is what it is... a MicroSD card with a nice 32GB of storage. Not much you can say about a card.

For 3 months my 32 GB micro SD card worked great in my Samsung S3 cell phone. I only stored music on it -- about 17 GBs. One day it stopped working. Would not work on another's phone or my PC. It has a lifetime warranty. BB said I need to work directly with SanDisk. I had Verizon look at it. Said the card is bad. Sent email to San Disk. Reply was within 12 hours. But they asked about ten questions. I replied to the questions including photos of the card and my receipt.. They also asked me to read about their return policy. They start out by stating it will take about 3 weeks. I bet 99% of people give up trying. The process is very detailed. Now I'm waiting for their reply and RMA number. To get a replacement I need an RMA number and mail it back to SanDisk at my expense. Already I've spent over 5 hours on this. I could buy another for $30. Today I'm going to BB and will probably buy another. Maybe someday SanDisk will send me a replacement.