Just got this 128GB micro SD card and put it in my Samsung Note 3, replacing a 64GB Sandisk card before. The Storage under settings show 119GB free space! It was as easy as 1-2-3.Testing it using SD card reader on my laptop, I get around 45MB/s read, and close to 30MBs write. That's above the advertised throughput.So far I populated around 100GB of video files, and after a week of 3-4 hours of playing videos from the SD card, there has been absolutely no glitches, no hanging, and no errors!