Install and remove the SIM and battery.
WATCH AND LEARN
REMOVE BACK COVER & BATTERY: Remove the back cover of the device by inserting your thumbnail into the notch on the top right of the back of the device and lifting up. Remove the battery by gently pulling up from the notch on the bottom.
INSERT/REMOVE SIM CARD: Insert the Nano-SIM card into the SIM slot with the metal contacts facing upwards and notched edge going in first. Push until it is all the way in. To remove, simply slide it down.