How to fix the error of writing files to the SD card and the unreadable SD card

The problem is simple, because your phone ROM may not support APP2SD+, so it can't be installed on the SD card! It must be supported by ROM with Android version or above! If it doesn't work, it is recommended to flash the ROM after rooting!

**Open the error should be your own built-in**The file format supported by the device is relatively single,You or get an MP4 and put it on the SD card to try if you can**,Or under QQ video and audio**That supported format is more。

If none of the above can be solved.

But I see like the SD card is write-protected, this one is troublesome, I have to repartition, delete everything or.

The adapter of the TF card (that is, the big card used to connect the card reader and the TF card), like the floppy disk, also has a "write protection" switch, that is, there is a card slot and small paddle on the side of the adapter, when the TF card is write protected, as long as the small paddle is dialed to the opposite position, it is OK.

Export all files from the memory card.

Then format the memory card.

Then import all the files back.

It depends on what software is installed.,Some software runs on a higher system version.,Maybe your version is low.,So you can't use it.,**See what kind of system the software needs before,**Regardless of the system version,So you can put it.。

Here's how to fix SD card unreadable:1. The mobile phone card is broken or the contact is poor, resulting in the mobile phone memory card cannot be read. If it is a poor contact, it is a good problem to solve, take out the card, use the eraser to wipe the gold finger of the memory card, remove the oxide layer on it, and then put it in the phone to try.

If that doesn't work, pry the tentacles inside the memory card holder higher, or apply a layer of glue on the back of the memory card to increase its thickness.

2. The memory card of the mobile phone cannot be read due to poisoning. In this case, the poisoning will also lead to the problem that the memory card cannot be formatted, which is generally not easy to fix. If it is a virus that causes the mobile phone memory card to not be read, you need to format the memory card.

3. Now the mobile phone is relatively thin, so you need to rule out whether the SD card slot is loose or the SD card slot is rusty, or whether the metal strip of the card slot is bent and does not read. This is better to rule out whether the card is readable for a mobile phone, if not, then it is not a problem, if it can, it means that the card slot is a problem, try to correct the bending and wipe the card slot or fix the card slot.

There are several reasons why there is an error on your SD card:

2. It may be that the memory card is deformed and bent and causes physical damage.

3. It may be that there is a power outage or a smile when you are using the memory card.

4. It may be that the memory chip of the memory card is burned.

5. Caused by viruses in the memory card of the mobile phone.

6. If it is a software problem, the user can directly format the mobile phone memory card, and try to replace the memory card if it is a hardware failure.

7. If you want to rule out the problem of the memory card, it is recommended to try to restore the phone to the factory.

When there is an error on the SD card, you can try the following methods to deal with it:

1.Reinsert: Unplug the SD card from the device and reinsert it. Sometimes, a bad connection can lead to mistakes.

2.Reboot the device: Turning it off and then turning it back on may resolve the communication issue between the device and the SD card Silver Sakura.

3.Use a computer repair tool: Insert the SD card into the computer and run the SD card repair tool, such as "Disk Check" for Windows or "Disk Utility" for Mac.

4.Format the SD card: If the above methods do not work, you can consider formatting the SD card. Please note that formatting will result in all data inside the SD card being erased, please back up your important data in advance.

5.Replace the SD card: If the problem still cannot be solved after multiple attempts, it may be that there is a hardware failure of the SD card itself, and it is recommended to replace it with a new SD card.

If you still can't solve the problem after trying the above methods, it is recommended to consult a professional or contact the manufacturer of the SD card for further help and advice.

This situation is very common, and some of them manifest as a folder that cannot be opened or deleted, showing write protection or write errors. This is the case with the entire memory card or USB flash drive.

This is because there are some files written in the folder, and the base and format of these files are not recognized by the computer or mobile phone system, so they are displayed as no content, or even the folder is empty, and these contents are real, which causes the folder to be unable to open or delete.

Generally, formatting a memory card or USB flash drive can solve the problem that it cannot be deleted. If you can't even process formatting, the memory card or USB flash drive will be broken. It needs to be repaired or completely scrapped.

Reasons: 1. Poor contact between the mobile phone memory card and the slot;

2. The memory card has been damaged;

3. The memory card slot is damaged;

4. The memory card space is insufficient.

Format with a computer first: Plug in the computer with a card reader - right-click - format - select the system format as FAT32 and format.

Plug it back into the phone, it should be recognized, and format it with the phone again. If the card is not recognized on the computer, the card is broken.

If your phone can't delete files from the external SD card, we recommend that you do the following:

1.Replace other file deletion attempts on the SD card, such as one of them**.

2.If so, only individual files cannot be deleted, please check whether the file can be opened normally, and rule out whether it is a file corruption or program file.

Smart Manager - Storage - Storage Settings - SD Card - Uninstall (some machines: Settings - Storage - SD Card - Uninstall).

4.If it doesn't work, back up the data in the SD card and format the SD card.

If your phone's memory card cannot store data, we recommend that you:

1.Check if the memory card has sufficient memory capacity.

2.If there is enough memory, please remove the SD card and reinsert it.

3.If it doesn't work, put the SD card into another device to see if it can be used normally and rule out whether it is an SD card.

4.If it can be used normally in other mobile phones, please back up the data in the SD card and try to format the SD card (Note: If you are using a computer for formatting, please select Format-File System-FAT32 or FAT after right-clicking).

5.If it doesn't work, try to update the system version of your phone: please go to Settings - About Phone (About Device) - Software Update (System Update) - Update (please back up the data in your device before upgrading).

6.Try replacing another memory card.

If the problem persists, it is recommended that you bring the purchase invoice, repair card and machine to the Samsung service center for inspection.

<> its function is to adjust the position of the switch to determine whether the SD card can be read and written, so as to protect the data in the card and avoid virus intrusion.

The working principle of the write protection switch is as follows:

The write protection switch has no connection with the SD card internally, but only serves as a position indication externally.

There is a reed switch in the card reader, which is a contact switch.

When the yellow slider is in the "non-lock" position, the SD card is inserted into the card reader, and the yellow switch part just touches the blind limb switch of the card reader, so that the contact is closed and the circuit is connected. At this point, it is equivalent to telling the card reader: this card can be read and written.

When the yellow slider is in the "lock" position, the original position becomes the "concave" area, which can not withstand the contact switch of the card reader cavity, at this time the contact is in the normally open state, and the circuit is not connected, which is equivalent to telling the card reader: this card can only be read and not written.

1.Memory Card Corruption: The memory card may get corrupted due to long-term use, improper plugging and unplugging, external impact, etc., resulting in errors. The workaround is to replace the memory card with a new one.

2.File System Error: There may be an error in the file system on the memory card, which prevents data from being read or written properly. The solution is to repair the partition of the memory card or the system by partitioning or formatting it through the disk management tool on the computer.

3.Memory card reader failure: The card reader or card writer used may have a faulty fault, causing problems in communication with the memory card, resulting in an error. The workaround is to replace the card reader or writer, or try using a different device for read and write operations.

4.Computer or device failure: The device connected to the memory card (e.g., computer, camera, etc.) may have a hardware or software failure that prevents the data on the memory card from being read or written correctly.

The workaround is to check if the device is working properly, or try to use a different device for read and write operations.

5.Memory card infected: When a memory card is infected, it may experience issues such as slow read or write speeds, data loss, or corruption. The workaround is to use antivirus software for antivirus and clean the memory card of malware.

It should be noted that the important data in the memory card should be backed up before doing anything to avoid data loss. If the above methods do not solve the problem, it is recommended to seek professional help.