1. Turn off the device.
   
2. Remove the battery cover.
   
3. Remove the battery.
   
4. Insert or remove the Micro-SIM card.
   
5. Insert or remove the memory card from the slot on top of the SIM card slot.
   Note: To prevent data corruption, it is recommended to unmount your memory card before removing it. To unmount your memory card, tap Settings > Storage > Unmount SD Card.
   
6. Replace the battery.
   
7. Replace the battery cover.
   
8. Turn the device back on.
   
9. When the SIM card is incorrectly installed or missing, the Missing SIM Card icon will display in the notifications bar.