SanDiskUltra 128GB microSDXC UHS-I Card with Adapter, Black, Standard Packaging (SDSQUNC-128G-GN6MA)

I purchased this because I had run out of space on my old Samsung micro SDXC UHS-1 Card PRO 64GB Class 10 for Galaxy Note 2 II. That card had followed me from a Note II to a Note 3 to my current Note 4. I was a little concerned about compatibility and reliability because a few years ago tried to save a buck by getting a tier 2 brand card that literally melted down.This time I took a chance with this non-Samsung card and cannot be more pleased. For one thing, the transfer from my old card to this one did not cause this to get hot. Considering that there was about 29GB involved that was my first indication that this is a well made card.Another thing is after I transferred the contents to this card (via a card reader), as soon as I popped it into my Note 4, it immediately mounted and everything on the older card was there. I took the time to look for corrupted files, sampled a lot of random music, and checked a few videos. Zero issues and the Note 4 did not balk at this card or any of the files on it.As for speed, I am not going to make claims one way or the other. I did not test it with benchmarking software, and since I use this mainly for streaming music the additional speed (if any) is not noticeable anyway. What is noticeable is the total compatibility with my Note 4 and the extra breathing room the capacity provides me.Overall I am not only pleased, I feel as though this card is a better value than the Samsung brand cards that I had been purchasing. And every bit as reliable too.

Works well with no issues.

Excellent, and was auto recognized by my Samsung Galaxy S6 phone via the external OTG Card Reader Adapter.Samsung did a really dumb thing and didn't include a memory card slot on the Galaxy S6. You could only have a 32GB or 64GB S6 phone, which was dumb-butt stupid. 32GB was depleted quickly, and the 64GB phone was way overpriced. Sounds like something the minions at Apple would do.Today is 02APR2017, and a few days ago, they announced the upcoming 20APR2017 release of the Galaxy S8. It's supposed to be extremely expensive, but worth it. I was very close to planning on upgrading my S6 to S8, for the specific purpose of having a good phone with a external memory card slot.Thank God I didn't. That would have been another $900+ phone, and another 2yr commitment. My S6 is still a very good phone, minus the missing microSD card slot. More importantly, I only owe $80 more until it's paid off. They can keep that overpriced S8, and I'll keep my $900.I found a much better, and more affordable solution, by combining the two items (128GB microSDxc card, and Vanja SD card reader) listed below.Just slide the memory card into the reader, then plug the mini reader (smaller than a USB stick/thumb drive) into your phone (via the microSD slot, or the new USB Type-C slot). Voila, 128GB (119GB available) of much needed additional storage space "on the cheap." The phone recognizes it immediately.**NOTE** Your phone must be OTG (On The Go) capable. If you don't know what that means, just Google it. Or, search for "OTG" in the Google Play Store, and download an OTG checker App. It will tell you if your phone is OTG ready.IT'S SIMPLE... just combine the two items below and you're set, for a total cost of $54.95. It's so nice to be able to store and watch movies and videos again. With ease, mind you. :)**NOTE** The Vanja Memory card Reader will say (in it's description box), that it only supports up to 64GB sdcards. That's a misprint. My 128GB microSDXC card works fine, without any issues.Enjoy!!$11.99VanjaMemory Card Reader,SD/Micro SD Card Reader and USB Type C Micro USB OTG to USB 2.0 Adapter with standard USB Type C Male Connector for PCs and Notebooks Smartphones/Tablets with OTG Function$42.95SanDiskUltra 128GB microSDXC UHS-I Card with Adapter, Black, Standard Packaging (SDSQUNC-128G-GN6MA)

Card came in and tested fine in Windows, but did not work in my tablet. I contacted support, and the tool they sent me to use to format it failed to work, so they said request a replacement. Similar issues with the second card, but have tested the card in other tablets on display at Best Buy, and it works no problem. Looks to be a port or software issue on my device.Other than device issues, the card writes around 20-35 MB/s from what I have tested. Read speeds a bit higher, though I have not seen the 80MB/s advertised, could just be limits of the laptop/bus testing it. Seems like a good product, and is a great price for the space!Really have to give a shout out to SanDisk support on this. Even though it looked like a device (tablet) error, they helped me look at and diagnose the card and didn't hesitate to give me a ticket/incident number to get the card replaced. Really happy with support, just need to get the tablet repaired/replaced so that I can utilize the card I purchased, but works great with Windows so far on transferring pictures/movies!