It could just be my phone a Galaxy S3 but I have this MicroSD card in my phone and a 32 gb microcenter version in my wife's phone and the 32 th version benchmarks faster than this card. Not by much but it is slightly faster. Again this could just be my phone. One thing I do have a problem with is the fit of the microSD card in the holder/adapter. It is a very tight fit. If I put the card in a different holder/adapter it slides in and out with out problem. The one it came with really holds onto the card.