
I use my card in Nexus an Android phone. I tried to phone benchmark application to measure the performance of the card and it works on writing and reading 5MB/sec 9MB/Sec Read. This is something that is set to 10 MB of data and test the size of 8KB write block size. I saw a similar performance to ferment, when the card was installed on my PC via a USB 2.0 adapter. These numbers show that works a little better than the minimum guaranteed to the Class 4 card, and it's great. I'm from 16GB Class 6 cards and did not notice performance degradation, at the moment.
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