Dear friend. I don't really know if it's compatible with Samsung galaxy note II, I don't have one of it, but for sure, if it has a micro sd slot available will works in it, I can warranty this is a quality product, I have bought for my music player and for my tablet, and they are working great. In my personal opinion this is compatible with any divice that has a micro sd port. Very recommensable. By the way I don't have any relation with the seller, it is my personal opinion, you can buy it from any seller you want. Have a great day. Best regards.
As far as I know most Micro SDHC cards are compatible, I even purchased this one for a generic brand tablet I got for my daughter for Christmas and a 32GB version for a Samsung Gallaxy III phone. works without issue. Sandisk are one of the most reliable portable memory manufactures that I know, use them all the time.