IVIEW IOIONB User Manual page 8

USING MICRO-SD CARD
→ Settings → Storage →SD card → Unmount this storage device. When it displayed Mount
this device and then press the card lightly; it is partially ejected allowing you to pull the card out.
Don't insert and remove the U-disk repeatedly in a short time, as this may cause damage to the card.
We recommend using major brands of memory cards to avoid incompatibility.