Got this for my Galaxy S4 because the internal storage is apparently only about 9GB out of the advertised 16GB after formatting for Jelly Bean. The card works great so far and its actual storage capacity in the phone is 59.45GB. I've mainly just been able to use it for storing pictures from the camera so far, because I am waiting on Verizon and/or Samsung to release the S4 update in the US so that I can actually transfer some apps to it (especially Play Music which caches all of your songs to the internal storage by default). If you are looking to use this for the same purpose as I am, I would wait until the phone update is released as this could go on sale or lower in price between now and then.