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External Memory – SD card unrecognized

  • Others
  • Others
  • Troubleshooting
  • Cell Phones, LG Friends, Tablets




SD card is not recognized



symptom Symptom


              SD card is not recognized.


cause Cause


              1. Removing the SD card or powering cell phone “off” while external memory SD card is in use

                  (data transfer between a MP3 player and a cell phone, image saving, copying, deleting,

                   formatting or viewing) risks causing stored data to get deleted.


              2. FAT File Formatting System can cause errors thus preventing the SD card from being read.


              3. There may be insufficient space in the external memory card to slow down the program and

                  execute file recognition.


              4. Dust or foreign objects on the SD card connector can also be a reason for storage card



              5. Pin location and thickness may differ slightly by manufacturer so some SD cards may just

                  not be compatible with smartphone device.



how to fix How to fix


              1. It is recommended to initialize SD card on the cell phone before using it for the very first time.

                  How to format
                  Go to Setting > Storage > Unmount SD card > Format SD card
                 As the formatting system itself for the SD card gets stored on the card the storage space

                      may never reach maximum capacity after formatting.


              2. Removing the SD card without unmounting it risks causing data loss and system malfunction.

                  Please go to Setting > Storage to unmount the SD card first before disconnecting it.

              3. Do not put stickers on the SD card. Card breakdown may occur should pieces from foreign

                  material detach themselves inside the phone interfering with proper functioning of external

                  memory peripheral.

              4. Try reading the SD card with another cell phone or SD card reader. If it is recognized, back

                  up data to the PC and reformat the SD card. Try again on the cell phone.

              5.  If symptom persists, upgrade your cell phone to the latest firmware version. 

                   If no avail, please contact LG Customer Service Call Interaction Centre for the nearest

                  authorized service center for technical assistance.


function SD (Secure Digital) Card


              1. SD (Secure Digital) cards are designed to store data within digital cameras and

                  They need little space and are easy to use while data doesn’t get lost when power

                  is disconnected.

              2. Commonly known as external memory and used to provide more storage in addition to

                  devices’ embedded memory, SD cards are also flash memory, so as data is transferred,

                  the transfer method differs from that used by device’s embedded memory. 

Recent SDHC cards are an upgraded version of the SD card. SDHC cards support file

                  size capacity greater than 2 GB, use FAT32 (File Allocation Table 32) formatting system 

                  and can store data up to 32 GB. 

              4. Transfer speeds are rated into class 2, 4, 6, and 10. Class 2’s minimum speed is 2 MB/s.

                  For class 10, the minimum speed is 10 MB/s. Card prices should expect to be more

                  expensive in proportion to their respective writing speed.


              Difference between SD card and SDHC card

             sd card


              1. The biggest difference between the SD card and SDHC card is the file formatting system.

              2. SD card uses FAT 16 system and SDHC card uses FAT 32 system.

                  SD card cannot recognize any file over 2GB in size while SDHC can support file sizes over







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