Samsung EVO 64GB 48/MB/s Micro SDXC Memory Card with Adapter up to (MB-MP64DA/AM)

I tend to do a very large amount of research before I buy anything tech/electronic wise since I not only find it fun but of course helps me end up with the best product for the money, future proofing to the best I can and also not over spending on features that go used(which in the case of SD and memory cards is a big issue)I now have it in my Samsung Galaxy Note 4, and primarily got it because I stream via ChromeCast/Samsung TV 1080p movies frequently approx 2GB each. I want to free as much space on my internal memory as possible so as to not slow the device down with large movie files like I was doing with the old class 2 16GB card I had.Now as this card totes a Class 10 transfer speed rating that is also UHS-1 compatible....the kicker, if your device supports UHS-1 and by the way no smartphones at the moment do...and unless your using your phone as a professional video camera, recording large HD clips it makes no difference really and this is why UHS-1 support if found mainly on high end video recorders. So the advertising for this card boasts a 48m/s transfer speed that sounds pretty good right? (dont forget this says "with UHS-1")....Yes you see where now one can be confused about the real speeds people will see on their smartphones/tablets, which by the way is probably the majority use now of these cards as one can now add double their 32GB internal memory in one fast SD card for about $30...kind of makes you think how much of a rip off Apple is for charging 100 bucks for each additional 16Gbs or 32Gbs, I mean the physical memory isnt costing them that so what is, memory started becoming dirt cheap about 6 years ago but drones still cling onto their iphones like something called Micro SD cards havent been invented. Oh I forgot they have "the clould" because that is like exactly the same thing as having the data on a memory card in your phone, not dependent on Apples servers or data/internet being used or even present . Anyways enough icrap, this is the EVO version, the mid range model, the PRO being the best but also exponentially more expensive...the EVO was only about 10 or 15 bucks more than the baseline card and is about double the speeds. The PRO version had about double the EVO speeds but I was almost sure those added speeds wouldnt get utilized on my phone...I couldn't find anywhere detailing exactly how fast the Note 4s SD hardware/software was capable of transferring but since the Note 4 is essentially the top of the line phone toting the most up to date processor and other specs I figured that it had to at least transfer Class 10 speeds.So far I am extremely happy with the performance of this card. Besides the plethora of great reviews about this card which makes pulling the trigger way easier on the order. I like the Samsung Samsung paring haha as hey it can't only help right?...BUT now let's get down to real stuff...HOW DID THE CARD ACTUALLY PREFORM WHEN TESTED? (Using the A1 SD Bench app which is a great app to test your phones SD card but also see how other phones on the market, tablets, and their specs stack up against each other) This is an awesome app because the data is all sourced from the very large amount of tests that people who run the app submit for all to see, so the numbers are real world sourced, have a large sample size to null any outliers, and doesn't have a bias towards hyping certain features like advertising does.The card averaged over over 10 tests of the long test mode (recommend standard):40.95MB/s Read ------ 20.92 MB/s WriteSo it seems that although the toted 48 mb/s they advertised, with UHS 1 compatible device if you pay attention though...which my Note 4 is not compatible with...still hit consistently at 40/20 read write with the card about 3/4 full of content during testing as to test real life conditions. The Note 4 does appear to support Class 10 transfer speeds on SD cards and this card works great because you are not over spending on anymore than you need, yet your utilizing the cards EVO speeds practically fully when tested in real world conditions.

No problem with this sd card. No corruption, Samsung is a reliable brand.

Needed an extra memory card for my GoPro.No issue encounter.

This is it if you want to keep in touch

I finally decided to step out of the dark ages and upgraded from a "dumb phone" to a Verizon Samsung Galaxy S5 "smart phone". I had resisted that move for several years, thinking that my Verizon phone bill would increase by another $40-50 over the $105 which I was already paying for their base plan. Stopping by Verizon to troubleshoot a minor malfunction of my LG dumb phone, I asked how much an upgrade phone would cost me and was shocked to find out that my total phone bill would drop to $60 per month by switching to a smart phone. Wow. No brainer and took the plunge.Next I realized that the 16gb of onboard memory could be chewed up pretty fast with media, such as videos of family, photographs, and my extensive music library, so I searched for high capacity micro SD cards to install in the S5. Although the Sandisk was considered, I noted a number of negative reviews in which their card had flaws which had to be addressed by Sandisk's customer support (which by the way, appeared to be very proactive on Amazon, by addressing each 1 or 2 star review with a request for the reviewer to contact Sandisk support for a resolution to their problem...bravo to them for caring enough to monitor negative reviews).At any rate, there seems to be somewhat universal problems encountered with these higher capacity cards, depending upon what file format the Android devices run on (in their software)..i.e. FAT32 vs. exFat (which is on newer devices). Fat32 PC's and mobile devices will not recognize cards above 32gb. Many people running software with FAT32 have been advised to reformat the 32 and 64gb cards in their mobile device so that the device recognizes the card and can mount it successfully. So, not being a computer geek who understands the technical aspects of all this, I was a little bit hesitant, so I decided that if I have a Samsung S5 phone that the seemingly logical thing to do would be to purchase the Samsung 64gb card instead of the Sandisk. Makes sense that there should most likely be a higher degree of probable compatibility with the phone, being from the same manufacturer.Bottom line is that I inserted the Samsung 64gb Evo card into the S5, and it immediately recognized the card and also gave me a screen pop up indicating that any new pictures taken on the device would automatically default to storage on the card instead of storing on my phone's internal memory, which is exactly what I wanted to do. Then I fired up the camera and shot several pictures and each one showed the little SD card icon in the bottom left of my screen, indicating that the new shots went to the card for storage. Now all I need to do is to figure out how to move the shots I have already taken, from the S5 internal storage to the card.As a footnote, SD and microSD cards, and flash drives can definitely corrupt at a future date, because I have had it happen to me on 2 Sandisk flash drives, losing everything I had stored on them, so I highly recommend that you use Google+ for backup storage of media. It does not cost any extra and your device will send your media to Google for backup, automatically whenever you are powered up. Also be sure to go into Settings on your device and select the option to backup to Google, only when you are connected to WiFi (such as at home), so that the backup action does not eat into your data plan. I found out the hard way that backing up by "through the air" internet connection on my phone, without being connected to the internet by WiFi) quickly used (added) an initial 1.5 gig of data, for just 2 short videos and about 20 photos shot during the first weekend I had the phone, which backed up automatically, in the absence of "backup only when connected to WiFi".Hopefully this 64gb card will not corrupt in the future. Time will tell.