Owned this card for three days. At first I found out at some point after the folders were transferred that there were no files in them. Then there was a glitch that some of the files refused to open. I took it out of the phone, inserted it into the card reader and ran the test. It was found that 75 percent of the map is read with errors. That's Taiwan for you. By the way drove her and the speed. So, at a speed of x10 (10 - 18 MB), she writes only files from 8 MB. It writes smaller files at a speed of 2-4 Mb / s. I thought about what to change for and took a card from another very well-known manufacturer 32GB class 4. Made in China. According to the tests, there are no read / write errors. I made a conclusion for myself that it is not worth chasing speed. In most cases, class 4-6 is sufficient. Yes, and twice the price.
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