Hello, hi, I have a Transcend 16 GB class 4 memory card and i used it in my Samsung Galaxy Y Duos.Certainly my mobile can't recognize the memory card,i also tried it in my card reader also.but still no one can recognize it. plz suggest me a solution..
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Try this: In Idle mode, select → Settings → SD card and phone storage → Unmount SD card → OK → Format SD card → Format SD card → Erase everything.
Is your card reader compatible to SDHC memory cards? If not, then you can just "read" up to 2GB SD cards