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10.1" tablet released in February 2014, powered by a custom version of Android 4.4 KitKat, and identified by model number: SM-T520NZKAXAR

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Micro SD-card not mounting on Samsung Tab Pro, why is it greyed-out?

I have a Samsung tab Pro 10.1 and when I insert a new micro sd card of 16GB or of 8GB the card won't mount. The option at 'settings>general>storage>mount sd card' is greyed-out and therefore not possible to mount the sd card. Can anyone help me solve this problem?

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I have also reformatted the sd card into my macbook to the exFat format. is this correct? After doing so I have inserted the card in my tablet. However, still no effect.

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I'm having the same exact problem. It's grayed out. I've tried sdhx, sdxc. It's always grayed. The cards work fine in other devices and yes I formatted them. I don't know what to do. When I click on the storage tab for a split flash I can see the sd card memory information flash because it goes permanently gray and useless. :(

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Make sure you are formatting them to FAT32, not exFAT.

I believe Android only reads FAT or FAT32 on older android builds.

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