insert sim/insert smart chip/no sim mode error? (lumia 920)

                                                    FULL PHONE SPECS: Nokia Lumia 920

CAUSES

- Incorrectly inserted SIM card

- Dirty SIM card gold contacts

SOLUTION

-Ensure the SIM card is correctly inserted by:

- Ensure the SIM cards gold contacts are free from any external interference. This can be done by:

. Powering OFF the device and removing the SIM card

. Gently wipe the SIM card with a soft clean cloth

. Replace the SIM card and power ON the device.