La internal memory capacity of the mobile phones always has a limit, so they have a slot for attaching an external memory card which increases the memory space of our phones and allows us to store more pictures, videos and other files; however, there are times when the mobile phone does not recognize or read the memory card.
When your phone cannot recognize or detect the micro SD card, as memory cards are also called, you need to know why this problem occurs, as there are different types of faults ranging from the simple movement of the board to the damage or detachment of one of the legs or pins it has.
Look for the problem
This type of error is common and can be software or hardware, so the error could lie in the cell phone or the card itself.
On some occasions the memory shifts or it has simply been entered incorrectly and for this reason the phone does not detect it; The first thing that is usually done in these situations is to remove the memory card, previously it is convenient to turn off the mobile phone, then it is reinserted in its place and the phone is turned on.
Once the mobile restarts, it should read the memory and work fine, otherwise there are other ways to try to fix the problem.
Try cleaning the groove! ; Mobile phones are filled with dust internally and the memory card slot is no exception, so it must also be cleaned, for this process the previous one is repeated, the memory card is removed and cleaned paying close attention to a dry cloth; in some phones the slot has a removable tray which also needs to be cleaned with great care.
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If at this point the memory is not detected yet, it may require another type of more complex process and may require expert help.
To rule out that the problem does not lie in the card slot and check if the fault is in the phone or in the SD, we take the memory card and the let's test on another device , on another mobile phone or on a computer, if the card is read by another device it means that the problem is with the phone; Conversely, if you don't read it, it's the card that's damaged.
When the card is acquiring failures it mainly tries to remove contents and open memory space by deleting unimportant files, however the problem may persist, in this case the best solution is to run a memory format in which erase all data from the SD , he said best formatting to do it from a computer
Memory card repair
resolve these defects it is necessary to do a repair, in many cases the legs or pins come off so they need to be welded, but this process is complicated and must be done with extreme subtlety as if you touch the wrong pin it can get worse, it is recommended to take the phone to a technician.
In case it is not the card and it is the phone that is faulty, try another memory card and insert it into microSD port.
When the phone is not reading the memory, you check the pins and try to solder them in the same way; If you have any software problem then you can reset the mobile as it came from the factory, this is a last resort since you are deleting everything from the mobile and besides losing memory data, you will also lose applications and other important information.
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After performing any of these procedures , the phone should read the memory card, however there are times when the error is fatal, in which case it is advisable to expand the internal memory of the phone for more storage.