Noticeable improvement to my Sprint HTC EVO LTE with this.Camera app used to have bad pictures when I shot in burst mode (several frames per second). With this card it never misses a burst picture.Also apps that have been installed to the SD card are a lot more responsive.Update:Card has died on me, as of May 12th 2013. I originally ordered this October 22, 2012. So I got about 6 months out of it. Oh well.