I bought this memory card for my new Samsung Galaxy Note 3 from T-Mobile, and it works perfectly. Turn off the phone, take off the back cover, insert the card, and reassemble. Simple as that, and when I turned the phone on and checked Storage, there was the external microSD card. The phone shows total space on the card as 59.45GB, but I think that's a function of the phone using some space for its housekeeping and not a shortcoming of the card itself.Like the title indicates, no hassles with this memory card. It just does what it's supposed to do.