View SIM Card Number - LG G Pad 8.3 LTE

1. From a Home screen, tap Apps .
2. From the Apps tab, tap Settings .
3. Tap About tablet .
4. Tap Status.
5. View the ICCID (SIM ID).
   

You can also remove the SIM card and view the 20-digit SIM card number (with the gold contacts facing away).