Use the Notch in the top left side of the back of the device to take the back cover off. Remove the battery.
Insert the Nano SIM card with the gold contacts facing down.
To expand the storage capacity of the device, you can use an optional memory card. The Memory card slot is located above the SIM card slot. Insert the memory card with the gold contacts facing down and the notched edge going in first. Note:SD cards are sold separately. To prevent data corruption, it is recommended to unmount your memory card before removing it. To unmount your memory card, tap Settings > More > Storage > Unmount SD Card.
Insert the Battery with the gold contacts touching.
Replace the back cover and gently press the edges until they click into place. Press the Power/Lock button to turn on the phone and begin using it.
If the SIM is not in the device, the Missing SIM icon will be displayed in the notification bar.