1. To swap out the nano-SIM card, gently pry the back cover away from the notch at the top of the device.
   Note: Open the back cover carefully to avoid damaging it.
   
2. Press down on the existing nano-SIM card to remove it from the spring-loaded SIM card slot. Insert the new nano-SIM card with the notched edge facing the device and text and images on the card facing up.
   
3. Replace the back cover by placing it over the device, then pressing it down until the panel snaps into place.