LG G Vista 2 -H740 User Manual page 20

Your device supports up to a 2TB microSD card. Depending on the memory card manufacturer and
type, some memory cards may not be compatible with your device.
Using an incompatible card may damage the device or the memory card, or corrupt the data
stored in it.
Frequent writing and erasing of data shortens the lifespan of memory cards.
Remove the back cover.
Insert a memory card with the gold-colored contacts facing downwards.
Replace the back cover.