What if the SIM card of the mobile phone is not recognized? Solution to Invalid SIM card

Step 1:

First shut down the phone, and then try inserting the SIM card of the phone several times, as shown in the figure.

Step 2:

If this is the case, start KO. If not, go to "Settings"-"SIM card management" on the mobile phone to check whether the sim1 and sim2 cards are enabled:

Step 3:

If there is no problem with SIM card insertion and the SIM card in the mobile phone is enabled, we can try to restore the settings.

The Yunqi community editor reminds you that if the above methods are still unable to identify SIM cards, we can connect the SIM card of our friends to the mobile phone. If there is no problem, it is our mobile phone SIM card, you can switch to the carrier for a card. If it cannot be identified, it is a mobile phone problem and can be sold for repair. If