To remove the back cover, with the back of the phone facing you, put the tip of your index finger in the seam between the screen frame and the back cover. Press the middle of the back cover, bend the cover open, and remove it.
Insert the microSIM card into the SIM slot, with the half edge facing the slot and the gold contacts facing down.
Insert the microSD card into the microSD slot, with the jagged edge facing the top and the gold contacts facing down. Note: MicroSD cards are sold separately. To prevent data corruption, it is recommended to unmount your memory card before removing it. To unmount your memory card, swipe down from the Notification bar and select All settings > System > Storage > SD Card > Remove > Yes, I'm sure.
The battery should click into place, with the Gold contacts aligned.
Snap the Back cover back onto the Device when finished.
If a SIM is not in the device or has not been properly inserted, the Missing SIM icon will be displayed.