LG D390n Guide De L'utilisateur page 324

To insert a memory card:
Insert the memory card into the slot. Make sure the gold contact area is facing downwards.
To safely remove the memory card:
Touch > Apps tab > Settings > Storage > Unmount SD card.
NOTE:
Use only compatible memory cards with your phone. Using incompatible memory cards
•
may damage the card and data stored on the card, as well as the phone.
As the device uses FAT32, the maximum size for any given file is 4 GB.
•
WARNING
Do not insert or remove the memory card when the phone is ON. Doing so may damage
the memory card as well as your phone, and the data stored on the memory card may
become corrupt.
To format the memory card:
Your memory card may already be formatted. If it isn't, you must format it before you can use it.
NOTE: All files on your memory card are deleted when it is formatted.
1
Touch to open the application list.
2 Scroll and touch Settings > Storage.
3 Touch Unmount SD card.
4 Touch Erase SD card > Erase SD card > Erase everything.
5 If you have set a pattern lock, input the pattern lock then select Erase everything.
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