How do I install a nano-SIM card on my ZTE Cymbal 2?

With the device powered off, remove the back cover via the bottom corner notch and then remove the battery through its notch. Insert the nano-SIM card into its slot with the cut corner first and gold-colored contacts facing down, being careful not to use non-standard SIM cards which could damage the phone. Reinsert the battery and replace the back cover. (Page 15)