1. AC Question's Avatar
    When I move or copy some file to my kingstone16g sdcard file from my mobile note 4 it accept but when I restart or power off all files disapear and demand to reformat the cars
    Please help
    01-17-2015 08:53 AM
  2. anon8380037's Avatar
    I had a similar problem with a Kingston 16gb class 4 card. I had it 18 months on a Galaxy S2.
    It started to say it was unmounting, then remounted.

    You may have a failing, faulty or fake card. Don't save anything precious on it.
    Stick to Samsung or SanDisk cards. I now don't use any card on my 32gb Samsung Note 3. With smaller capacity phones they are essential, of course.
    01-17-2015 09:10 AM

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