Red Rice note failed to activate the sim card after brushing (failed to send activation message to the gateway). How to solve it? thank you

Is the SIM card inserted in the correct position? At this point, you can insert the SIM card again. Is there any obvious damage or scratch on the gold card? If the SIM card is used for a long time or inserted frequently, it will cause poor contact between the card and the mobile phone. At this time, it is necessary to check the electrodes of the SIM card and the mobile phone. If it is not clean, you can clean it with an antistatic cloth.