I noticed that I was constantly running out of space on my Smartphone. I checked the SD card and it was a 16Gb, but was about 98% full with pictures, music, and applications that I downloaded over time. I decided to get a bigger SD card for the phone. I researched online and found that my phone will support a 32Gb card, so I bought this one. Works great! All I had to do was copy and paste (via my computer) all the information from the old SD card ot this one. My Smartphone picked it up right away and I didn't lose anything, AND now I have twice as much room. I think the only thing I had to reset was my ring tones (because the wave files I was using were on my old SD card, and somehow the link between ring tone and file didn't match up), but other than that, everything else worked fine.