What if ZTE's n9 19d mobile phone sd card can't be used?

U disk/digital card/mobile phone card:

First of all, we must confirm whether the sd card is easy to use, and we can try to replace it.

1. Connect to the computer with a card reader to check whether the capacity of the drive letter is good.

If not, try another computer or card reader. If it still doesn't work, there may be something wrong with the card, which has nothing to do with the machine.

3. Replace the machine with another work card, and try to see if it still displays this problem. If it is still true, it proves that there is nothing wrong with the card, but the machine setting or something is damaged and needs maintenance or something else. The card cannot be repaired. If there is data, it can be recovered. U disk/digital card/mobile phone card: "prompt formatting", "unable to open normally" and "abnormal device": this situation is that when it is pulled out without safe deletion during use, it will become prompt formatting/"unable to open normally"/"abnormal device"/"0 bytes" unable to open.

There are two situations.

1. Because the U disk/digital card/mobile phone card is suddenly pulled out, the code is lost and the FAT is damaged, prompting to insert the disk or format it. In this case, just download a software on the Internet, such as diskgenius format. If not, try to find a mass production tool.

2. Hard failure: Due to sudden pull-out, unstable voltage may damage components or burn chips. Problems such as crystal vibration virtual welding caused by the failure of U disk itself. In this case, I suggest you find a professional data recovery company or a U disk repair company to try to repair it. The general recycling price is around 200-300. Never try to open the shell by yourself. If the hard fault needs to be restored by polishing the memory card to extract the essence, don't try it yourself, so as not to aggravate the fault. If there is no important data, I suggest you change it!

If you have any questions, I hope I can help you. Are you willing to adopt ~ ~ ~ ~