Jared
I bought this memory card specifically to add extra storage on my Samsung Galaxy S3. It was very easy to install in the phone and it recognized the card instantly. I turned the phone off before I removed the back cover and installed the card. I am not sure if this is needed, but I figured it wouldn't hurt by doing it that way. After it was installed and recognized, I formatted the card through the phone options. The card is very fast when writing to it or reading from it.I would definitely recommend this card to others, especially if you have a Galaxy S3 and want some more storage space on it.