
I ordered this card and it arrived very quickly! Got it for my Samsung Galaxy S2 smartphone. I copied the files from my existing 16GB card and loaded all my music from my old laptop hard drive. Popped the card into my phone and it reads a total capacity of 29.71GB, of which 17.3GB is used for music and existing files. I cleared my phone's memory, closed all other programs and launched the SD Tools speed test app. The results are as follows: Write Speed: 8.7 MB/s. Read Speed: 20.6 MB/s After launching the Pandora application, turning on the GPS and restarting SD Tools, the results are as follows: Write Speed: 7.6 MB/s Read Speed: 20.3 MB/s My music and photos appear instantly without hesitation. I mainly use this 32GB to store music, photos and other files. The internal 16GB in the phone is more than enough to store applications and other programs. I'm very happy with these speed numbers for a class 4 chip. If anything changes in the future I'll write again to update this review. Great buy for less than a dollar per gigabyte!

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