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Files From SD Card Not Seen By Phone's OS

Discussion in 'Android Apps & Games' started by PGB1213, Nov 7, 2019.

  1. PGB1213

    PGB1213 Member
    Thread Starter

    Hi All!
    I'm not sure this is the correct section of the forum for this thread. Please accept my apologies if it isn't.

    I have a recent problem for which I can't find a solution:
    (ZTE Maven Z-812 Android 5.1 phone)

    I noticed some apps disappeared from the phone (completely). They were SD card apps only.

    While investigating, I found that the File Manager app says there is "No User Data stored on the phone." and "No SD Card".
    But, I can take the SD card out and connect it to my computer and all the files for the missing apps (and my other SD card files) are present. So this tells me that the SD card is OK, but the phone or the OS can't read it.

    What caused this? Is there a prevention?

    Thanks Very Much for helping!
    Paul
     



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  2. mikedt

    mikedt 你好

    Could be a problem with the micro-SD reader in the phone itself. Try another known good micro-SD in the phone, and if that also doesn't work then very much confirms it's a problem in the phone, that might require repair or replacement.
     
    PGB1213 likes this.
  3. PGB1213

    PGB1213 Member
    Thread Starter

    Thanks Mike!

    I wanted to find out if the SD just came Un-seated, so I took the SD out of the turned off phone and re-inserted it, restarting the phone.
    The phone could not see the SD. I repeated a few times. Still no luck.

    To find out if the SD card was bad, or if the phone's reading slot was bad:
    I took the SD out of my GPS (the only other micro SD that I had), formatted it & put it in the phone blank. It was seen by the phone.
    The phone added many folders to it by itself. (Setting it up, I guess.)
    This told me the Slot was OK.

    For fun, I took the Phone SD & put it in the GPS. The GPS saw the music on the SD. (That's all it should see as far as I know.)
    This told me the SD was OK.

    This made me believe that the slot in the phone and the SD card were both OK and something corrupted the SD.

    I copied the contents of the Phone SD to the computer. (I do have a recent backup, but wanted today's version.)
    I formatted the Phone SD in the computer & put it in the phone. The phone saw it and put some folders on it.

    I copied from the backup to the Phone SD any folders that actually had files in them, such as Music, Documents, etc.
    Some only had empty folders marked Cache or other. I skipped them.

    Next, I put the SD back into the phone and the phone saw it & could read from it.

    All of the apps that I had on SD were gone, even if I put their empty Cache folders from the backup onto the SD.
    There must be important files in a folder that the phone over-wrote when I put the blank SD back into the phone.
    I'll re-dwonload them.

    I still do not know why the phone did not read the SD, but now can (after a re-format in the computer).

    Do you think it is wise to assume the SD is on its last legs and I should buy a new one?
    Or, is there another possibility for why the phone stopped reading the SD, but now can?

    Thank You Again!
    Paul
     
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