SD card common problems and solutions

(1) The SD card chip is not clean
Because some users of the protection of the chip is not very comprehensive, it is often stained with dust or oil, resulting in abnormal card reading.
Judging method: Observe whether the metal area on the card is dim or whether there are spots.
Treatment: Use cotton cloth and add alcohol or water to lightly rub, and then reinsert after the water works. (2) The battery voltage is unstable
Because the requirements of good quality card reading on the power supply are very strict, sometimes the use of the battery bought on the market rather than the original power is also easy to lead to the reading of the card is not smooth.
Judgment method: In the case of non-primary power, the standby condition is not ideal, then the reason for the battery should be suspected.
Treatment method: Change the original electricity and try again.
(3) The card slot is squeezed
For some ultra-thin machines, the card slots are cleverly designed. If you use some informal batteries on the market, the thickness exceeding certain requirements will cause extrusion of the card slot, resulting in the reading of the card is not smooth.
Judging method: Change the original electricity to see
Treatment method: Use primary electricity. And with something to push the slot up and down
(4) The metal wire inside the card slot is rusty or bent excessively
Because some card reading mobile phones support hot swap, frequent insertion of the card will cause the card slot to read the card data of those wire bending or rust Method: The card slot to the sun, observe whether the wire contact is at the same height, if not, it may be this problem. Treatment: Try to use a needle to pick the wire down a bit.
(5) SD infected with virus
For some smartphones, the SD is infected with a virus on the computer, which also causes the card to be unable to read normally.
Judgment method: Read SD by computer and scan it. Processing method: Format the card on the computer or other low-end storage (such as cameras, etc.), such as formatting on the computer, should take FAT format, not FAT32 format.
(6) The SD card is improperly formatted
Since the formatting format of the mobile phone and the computer is not the same, it is good to use the computer to redefine the file format and format it according to the instructions. If you have a card reader on the computer to try, check the SD card, please be sure to check the card format is FAT, because FAT32 E680 is not recognized.
(7) The SD card is broken
This is easy to judge, the card with the card reader plugged into the computer, can read the card is good. (8) There is a problem with the mobile phone reading card
It's a phone malfunction. It has to be repaired.