Map-controlled waiting to receive my phone, what was my surprise to discover at the opening of the package that the card is not a Samsung card. http://www.amazon.com/Samsung-Electronics-microSDXC-MB-MGCGB-AM/dp/B009SK57ZQ Once formatted, the result of continuous trouble: can not read files without interruption (as if they were damaged) when the same files are no problem on another card.