SanDisk 64GB Ultra MicroSDXC Class 10 Memory Card with SD Adapter - Retail Packaging

Works on Samsung Note (International Unlocked version at least)Easily recognized by the phone no problems, full capacity recognized, no special set up needed

I just wanted to give a slight clarification for the other 5 star reviewers. I have a myTouch 4g using 2.3.4 so I did my homework before investing in this (and I've been waiting a long time for it to come out). I only purchased it after several other tech reviewers on other websites showed videos of their Android smartphones running 2.3.4 and after reformatting it inside the phone, working perfectly. After one tense minute of the reformatting process I was pleased to see a useable 59.3 gig of space available to use. Although you will not be able to take advantage of the SD XC format's claimed 30mb/s read/write speed after formatting it with your phone (google "will android smartphones be able to use 64 gig micro sd xc") it is a small price to pay for twice the available storage. That and you have bragging rights for the foreseeable future until the 128 gig cards come out for $500 or so.

One last noteto anyone who still doubts that it might work in their smartphones, the adapter that comes with it says "micro SDHC" not "micro SDXC" leading me to believe there probably isn't a whole lot of difference between the two if SanDisk is too lazy to make new adapters to make us think there is.

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This is great!! Works perfectly on the DROID Bionic! After putting it in the phone for the first time I had to reformat the card. The phone told me the card was damaged before reformatting. Don't panic if you see that. Just go in to your phone's settings, storage, SD Card, Unmount SD, and reformat that baby. Now my phone has 80GB of total storage. Less than that after formatting, but it's still a ton of space to put all of my music and movies. Time to convert and load more movies now that I have 27GB left.

After formatting, the phone tells me the card has 59.46GB available. If you notice on computer hard drives, the same thing happens. A 250GB hard drive will only give you about 233GB that you can actually use. It's normal.

I recommend this card to anyone who wants to leave their iPod at home and store all of their media on their phone, you can have everything with you wherever you go. It's awesome!

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As someone else mentioned I was also surprised to get the class 10 version of the SanDisk 64GB MicroSDXC card when the description shows a class 6. Faster is better so I had no problem with that. I inserted it into my Galaxy S3 and it was recognized by the phone and my Windows Vista machine. Using Vista I created several directories and loaded about 10GB of pictures onto the card. Everything seemed ok. I could see them on the phone and the computer. A few days later I took some pictures with the phone which were sent to the card. After 8 pictures the phone reported the card was malfunctioning and all further pictures would go to the built in phone memory. I plugged the phone into the computer and the card was no longer readable. It showed up as empty. I reformatted the card using the phone and now it refuses to recognize the card at all. When I attempt to mount the card it reports an error and refuses to mount. In the documention from the seller it states that there is no returns once the package is opened so now you know. Buy at your own risk.

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This is a great card. I installed it in my new Motorola Droid RAZR cell phone. The phone said upgradable to 32GB but the 64GB works in it fine with no problems. It's like having a larger MP3 with your phone.