How to deal with the SIM card that Xiaomi MAX3 mobile phone can't recognize?

After confirming that the phone model is the same as the SIM card type, I still don't know the card. You can check according to the following methods:

1. Enter "*#06#" on the dial to check whether the IMEI number of the mobile phone is normal. If there is no IMEI number, it is recommended to go directly to Xiaomi Authorized Service Center for testing and processing.

2. Reinstall the SIM card (please note whether the chip orientation of the SIM card is correct, and there will be a schematic diagram of the corresponding SIM card placement method on the Cato; Is Cato in the right direction? If it is still unrecognizable, please take out the SIM card and wipe the metal chip area of the SIM card with rubber or alcohol, and then try again.

3. Enter * # * # 64663 # * * in the dialing interface to enter hardware detection, and select "SIM card detection" to check whether the SIM card status is inserted;

A. If there is no SIM card displayed or the SIM card is not inserted, the SIM card is still not detected after trying to replace the SIM card. It is suggested to restore the factory or brush the machine, but it is still invalid. It is recommended to go to Xiaomi Authorized Service Center for testing and handling;

B. If the SIM card can be detected after replacement, please go to the operator's business hall to replace the SIM card and try again;

If the above methods can't solve the problem, it is recommended to go to Xiaomi Authorized Service Center for testing and handling.